The first month with new rats sets the tone for the whole relationship. Rush it and you get nervous, bitey rats that flinch when you open the cage. Take it slow and you get rats that climb onto your shoulder the moment the door opens. This guide splits the first 30 days into clear stages, so you know what to do, what to expect and what to watch for at each one. For the wider picture, our pet rat care hub collects every rat guide we have, and our complete rat care guide for first-time owners covers the basics before you buy.
Rush the first week and you get nervous, bitey rats. Take it slow and you get rats that climb onto your shoulder the moment the cage door opens. Nearly every handling problem in month one comes from going too fast in week one.
Before they arrive: getting ready
Set the cage up completely before your rats come home. You want them to go straight into a finished home, not a work in progress. Our complete rat cage setup guide covers sizes and layouts, and our guide to what a rat cage should have in it goes item by item.
The cage should be ready with:
- Clean bedding (substrate): paper-based, never cedar or pine shavings. See our rat bedding guide.
- At least two water bottles, tested for flow before the rats arrive
- A heavy food bowl with complete rat nuggets (pellets), not a muesli-style mix, which lets rats pick out the sweet bits and leave gaps in their diet
- Two or more enclosed hides: the RSPCA advises one more shelter than you have rats, each with more than one exit
- At least two hammocks
- A litter tray in one corner
- Climbing routes: ropes, ladders and branches
- A secure carrier for the journey home (see our rat carrier guide)
- A vet who treats rats, found before you need one
Put the cage in a room where you spend time, but not the busiest or loudest part of the house. Your rats need to get used to your presence, your voice and your daily sounds. They also need to sleep in the day, because pet rats are mainly active at night, dusk and dawn, so keep the cage away from a television, speakers, vacuum cleaners and anything that beeps. The RSPCA also warns against high-pitched sounds and ultrasound, which rats hear and we don't.
Temperature check. The room should stay between 19 and 23°C (66 to 73°F). Keep the cage out of direct sunlight, away from radiators and draughty windows, and out of conservatories, garages and sheds. Our rat temperature guide covers hot and cold spells.
Ask the breeder or rescue for a handful of bedding from your rats' current home and put it in the new cage before they arrive. Familiar smells help them settle faster.
Days 1 to 3: settling in
Do not handle your new rats for the first two to three days. Let them explore, eat, drink and get used to their new home without pressure. Wood Green also advises giving new rats a day or two to settle before regular handling. Speak quietly near the cage and offer treats through the bars, and let them approach your hand on their terms. This builds confidence far faster than forced handling.
Day 1
Bring your rats home in a secure carrier. Move them to their cage gently and then step back. Resist the urge to reach in and stroke them. They have just had a journey, new smells, new sounds and a complete change of home, and their stress levels are high.
- Open the carrier inside the cage. Put the carrier in the cage with its door open so they can leave in their own time.
- Check food and water. Make sure both are easy to reach from where they are hiding.
- Talk softly. Speak to them quietly whenever you pass the cage.
- Keep visitors away. Don't invite friends round to see them yet.
Expect hiding. Most new rats find the darkest corner or hide and stay there for hours. This is normal. Some rats explore straight away. Both responses are fine.
Days 2 to 3
Keep to the same approach. Sit near the cage and read, work or watch something quietly. Let them hear your voice and get used to you being there, without expecting anything.
Sneezing after a move can have several causes, including irritation from dust or a respiratory infection, and the timing alone cannot tell you which. If a rat sneezes repeatedly, the sneezing carries on, or you notice discharge, porphyrin staining (red-brown marks around the eyes and nose), unusual breathing sounds, less activity or a smaller appetite, contact a rat-experienced vet promptly. Difficult or open-mouth breathing needs an urgent vet. Do not wait for a set number of days to pass. Our guide to rat breathing changes explains what to record.
Avoid deep cleaning the cage in the first week. Your rats are building a scent map of their new home, and stripping it away resets their progress. Spot-clean droppings and soiled bedding only.
Days 4 to 7: building trust
Start with food. Every good association in these early days is built on treats, not touch.
Day 4: treats through the bars
Offer small treats through the cage bars. A piece of banana the size of your fingernail, a little plain cooked chicken or a single yoghurt drop all work well (see can rats eat bananas and our safe food list for rats). Hold the treat between your fingers and let the rat come to you. If they snatch it and run, that is fine. They are learning that your hand means food.
Do this three or four times across the day. Short sessions, no pressure.
Day 5: hand in the cage
Open the cage door and rest your hand inside, palm up, with a treat on it. Do not chase or grab. Let the rat approach, sniff, take the treat and leave. Some rats will sit on your hand to eat. Others will grab and bolt. Both are progress.
Expect nibbling. Rats explore with their teeth. A gentle, investigating nibble is not a bite: it is the rat working out what your hand is. If you flinch or pull away, the rat learns that nibbling makes the scary thing go away. Stay still and the nibbling stops. Our guide to pet rat biting explains the difference.
Days 6 to 7: treat trails
Lay a trail of small treats from inside the cage to your hand. This lets the rat follow a path towards you rather than you reaching towards them. Rats are far more comfortable approaching than being approached.
Milestone for the end of day 7: at least one rat takes food from your hand without hesitating. Some rats get there by day 4, others by day 10. Both are normal.
Never let rats free-roam in an unsecured space. Rats can squeeze through any gap wider than their skull and chew through cables in seconds. Rat-proof the area completely before you open the cage door.
Week 2: first handling and free roam
Week 2 is the right time for first handling. Cup your hand under the rat's belly and never grab from above, which feels like a predator strike and resets trust. Better still, let the rat choose to come to you: offer your arm as a bridge and let them climb on.
Days 8 to 10: first handling
- Pick the right time. Open the cage in the rats' active time. Early evening is best.
- Make an arm bridge. Lay your arm along the shelf or cage floor with a treat on your forearm.
- Lift slowly. When the rat climbs onto your arm for the treat, slowly lift your arm so the rat is sitting on you. Keep your other hand nearby as a safety net, without grabbing.
- Hold close. Keep the rat close to your body at chest height and support their weight with both hands. Wood Green describes one hand behind the front legs and the other under the back end.
- Return, don't chase. If they scramble, put them back in the cage. Don't chase a rat that jumps off you around the room: it teaches them that escaping your hands leads to freedom.
Sessions: 5 to 10 minutes of handling, two or three times in the evening, building up gradually. Never lift a rat by the tail, which can injure it.
Days 11 to 14: introduction to free roam
Set up a small, rat-proofed space for free roaming. A bathroom works well for first sessions: close the toilet lid, block the gaps behind the bath, and remove anything chewable or toxic. Our free roam safety guide covers setting up a bigger area.
Sit on the floor in the space. Open the carrier or cage door and let the rats come out in their own time. Have treats on you. Let them explore, come back to you, and explore again. You are becoming part of their safe landscape. A baggy hoodie or dressing gown gives them somewhere warm to dive into.
Rat-proof the space thoroughly before opening the door. Rats chew electrical cables, squeeze into gaps you did not think possible, and can vanish behind kitchen units in seconds. Block every gap, remove every cable, and check at rat-eye level, not human-eye level.
Milestone for the end of week 2: the rats climb onto your hands willingly for treats, at least one rat has sat on your shoulder or in your lap, and free-roam sessions last 15 to 30 minutes.
Week 3: routine and enrichment
Rats thrive on routine. By week 3, set consistent feeding times, handling sessions and an enrichment rotation. The RSPCA advises feeding twice a day, morning and evening, because rats eat mainly at dawn and dusk.
The daily routine
| Time | What to do |
|---|---|
| Morning | Quick health check (eyes, nose, coat, activity). Top up and check water bottles. Spot-clean the litter tray. |
| Late afternoon | Scatter a small part of the daily nugget ration across the cage to encourage foraging. |
| Evening | Handling session (15 to 20 minutes). Free roam (30 to 60 minutes). Fresh vegetables as treats. |
| Before bed | Main meal in the food bowl. Final water check. |
Weigh out the daily food using the packet guide, as PDSA advises, and count treats and scatter feed as part of that allowance. Our guide to what to feed a rat has a full food chart.
Start an enrichment rotation
Rats get used to their surroundings quickly. What was exciting on Monday is boring by Thursday. Rotate enrichment on a weekly cycle:
| Week | What goes in |
|---|---|
| Week A | Cardboard tubes, paper bags to shred, a dig box filled with coco coir with treats hidden inside |
| Week B | A foraging puzzle (treats wrapped in paper and stuffed into a toilet roll), a new rope or climbing route, frozen peas in a shallow dish of water |
| Week C | Rearrange the layout (move shelves, swap hammock positions), add a new tunnel or hide, scatter dried herbs in the bedding |
Our rat enrichment ideas and rat digging box guide have plenty more. The RSPCA backs chances to climb, forage, explore and dig, and suggests a box of clean sand or compost for digging. Start with shelter, routes and varied activities, then change one manageable part at a time. A behaviour change that lasts needs a vet's view, not just another toy.
Trick training can start now. Rats are clever, have good memories and learn quickly for food. Start simple: come when called (their name plus a treat), spin, and stand up. Use a clicker or one consistent word as a marker, use rewards only, never punishment, and keep sessions to 5 minutes at most. The RSPCA suggests teaching rats to step onto the scales for a reward, which makes weekly weighing easy. Our guide on how to train pet rats takes you through the first three skills.
Week 4: bonding deepens
By week 4, your rats should be comfortable with handling, familiar with free roam, and starting to show their own personalities.
What to expect
- Personality differences. One rat will be the explorer who is first out of the cage. Another will be the cuddler who falls asleep in your hoodie. A third will be the one who steals your socks. These traits were always there, but stress hid them.
- Greeting behaviour. Rats bonded to their owner come to the cage door when they hear you. Some grab the bars and rattle them. This is excitement, not aggression.
- Bruxing and boggling. Bruxing is a rhythmic grinding of the teeth. Boggling is when the bruxing is so strong the eyes vibrate in their sockets. Both usually mean contentment. If your rat bruxes while sitting on your lap, you have earned their trust. Our guide to rat sounds and signals explains the rest.
- Scent marking. Rats mark you with small drops of urine. This is not a toilet-training failure: it means they count you as part of the group. Males do it more than females. A small piece of fleece on your shoulder catches most of it.
Deepening the bond
- Shoulder time. Rats that feel safe will sit on your shoulder while you move around the house. Start with short trips (kitchen and back) and build up.
- Pouch or pocket naps. Some rats fall asleep in a bonding pouch or hoodie pocket. This is peak trust.
- Longer free roam. By week 4, sessions can run to an hour or more. Rat-proof a larger area if you want to give them more space.
The weight and health check habit
Weigh your rats weekly from day 1. A kitchen scale with a bowl on top works well. Write the weight down. Sudden weight loss (more than 10% in a week) is an early warning sign of illness and often shows up before anything you can see. As a guide, the National Fancy Rat Society gives adult weights of around 500 g (18 oz) for males and 300 g (10.5 oz) for females, but every rat is different, so track each one against itself.
Weekly health check:
- Weigh each rat and write it down
- Check eyes and nose: clean, clear and bright, with no discharge or porphyrin staining
- Feel the body for lumps, especially under the armpits, in the groin, around the neck and along the belly in females
- Check teeth: Wood Green describes healthy incisors as orange, smooth and wearing evenly, top and bottom, and never curling
- Listen to breathing: crackling, clicking, rattling or wheezing needs a vet
- Check feet for bumblefoot: redness, swelling or sores on the pads
- Check the coat, skin and the rump above the tail for scabs, fur loss or mites
Our guide to rat health problems covers what each sign can mean, and is my rat sick lists the warning signs that need a vet today.
Is it working? Signs to carry on and signs to slow down
| Signs bonding is working | Signs to slow down |
|---|---|
| Runs to the cage door when you come near | Puffed-up fur (a fear response) |
| Takes treats from your hand | Lunging or nipping at hands |
| Grooms itself in front of you (relaxed) | Running away and hiding when the cage opens |
| Explores your hands and arms willingly | Refusing all treats |
| Bruxes (grinds teeth) when held | Freezing when touched |
If you see the signs on the right, go back one stage for a few days. It is not a failure, just the rat telling you the pace.
Troubleshooting common first-month problems
"My rats won't come out of their hide."
Normal for days 1 to 5. If it carries on past day 7, check the cage is not somewhere too bright, noisy or exposed. Drape a light cloth over one side of the cage to make it feel more sheltered.
"One rat is biting, not nibbling."
A firm bite that breaks skin is different from an exploring nibble. It usually means the rat is frightened, not aggressive. Don't pull away fast, which teaches the rat that biting works. Instead, gently push towards the rat: it feels unnatural, but it confuses the rat enough to let go. Then go back to treat-based trust building. Wash any bite with warm soapy water.
"My rats are sneezing a lot."
Don't assume sneezing is harmless because your rat has just moved home. Repeated or continuing sneezing needs prompt advice from a rat-experienced vet, especially with discharge, unusual breathing sounds, a smaller appetite or less activity. Difficult or open-mouth breathing needs urgent help. Wood Green lists dusty bedding, poor ventilation, temperature changes and stress among the things that make respiratory infections worse.
"The rats fight in the cage."
Some scuffling and power grooming is normal while they sort out who is in charge. If you see blood, separate the rats and read our carrier method introduction guide. Rats from the same litter usually settle the order quickly. Rats from different places may need a proper introduction, after quarantine (see our quarantine cage guide).
"My rats are nocturnal and I never see them."
Pet rats are most active at night, dusk and dawn. Schedule handling and free roam for early evening. As trust builds, many rats shift their timetable slightly to overlap with yours, especially if evenings reliably mean treats and free roam.
Planning your first supplies
If you are starting from an empty cage, it is easy to buy the fun pieces first and miss the practical ones. A better way is to ask what each item does for the rats. Does it help them hide, climb, eat, forage, rest, or move around without awkward gaps?
A rat starter kit should cover housing, low-dust bedding, food and water, shelter, enrichment, transport, cleaning and emergency basics before it covers colour themes or cute extras. Our pet rat supplies list and rat cost guide help you plan and price it.
This guide is general rat care information, not a substitute for advice from your vet.
Frequently asked questions
My rat nipped me during handling. Have I ruined the bond?
No. One nip is not a setback. Put the rat down calmly, pause for about 30 seconds, then try again with a treat. Calm, consistent responses are what build trust, so avoid sudden movements or loud noises. A nip that comes again and again, or a bite that breaks the skin, is worth a fresh look at how and when you handle.
How long should free-roam sessions be?
Aim for at least an hour a day once your rats are settled, building up from 15 to 30 minutes in week 2. Many keepers find rats that get two hours or more out of the cage are calmer and easier to handle. Always supervise, in a space you have rat-proofed at floor level.
My rats sleep all day. Is something wrong?
No. Pet rats are mainly active at night, dusk and dawn, so sleeping through most of the day is normal. Plan handling and play for early evening or early morning. Worry instead if a rat stops waking for food, is hunched, or breathes noisily, and ring a vet who treats rats.
When are pet rats most active?
Pet rats are most active at night and around dusk and dawn. The RSPCA advises feeding, cleaning and handling at those times where you can, and keeping the cage out of busy rooms in the day. Many rats shift slightly to match a household where evenings reliably mean food and play.
How long do rats sleep a day?
Rats sleep for much of the day in several naps rather than one long sleep, and a figure of around 12 to 16 hours is often quoted by keepers. The welfare charities we checked do not give an exact number. What matters is that they can rest undisturbed in a dark hide during the day.
What are the pet rat essentials for the first day?
A large wire cage with a solid floor, paper-based bedding, at least two water bottles, a heavy food bowl with rat nuggets, one hide per rat plus one spare, two hammocks, a litter tray, climbing routes, a secure carrier and a vet who treats rats. Set it all up before they come home.
Should I clean the cage in the first week?
Spot-clean droppings, soiled bedding and food that could go off every day, but avoid a full deep clean in the first week. Your rats are learning the smells of their new home. When you do clean fully, keep back a handful of clean, familiar nesting material and avoid strongly scented products.