To keep pet rats happy and healthy, you need a proper wire cage, at least two rats, lab block food, safe bedding, hideouts, a water bottle, and an exotic-animal vet lined up before you bring them home. Rats live two to three years on average, with some reaching four, so the commitment is relatively short but intensive. Here’s everything you need to have ready.
At Least Two Rats
Rats are deeply social animals and must live in pairs at minimum. A single rat kept alone will become stressed, depressed, and more prone to illness. Most experienced owners keep three or four together, and you’ll regularly find them sleeping in a pile. Same-sex pairs or groups work well, or you can mix sexes if the males are neutered. Getting two rats isn’t twice the work; it’s actually easier, because they keep each other entertained and emotionally stable when you’re not around.
The Right Cage
Bar spacing is the detail most first-time owners get wrong. Cage bars should be spaced no more than half an inch apart. Even adult rats can get their heads stuck in three-quarter-inch spacing, which can cause serious injury or escape. A sturdy wire mesh is better than long individual bars.
Bigger is always better with rat cages. Look for a multi-level cage with solid platforms or ramps so your rats can climb and explore vertically. Avoid aquarium-style tanks, which trap ammonia and provide poor ventilation. Wire cages with a solid bottom (not wire flooring, which hurts their feet) are the standard. Place the cage in a room with regular foot traffic. Rats enjoy being around people and will engage with you more if they’re part of the household activity.
Safe Bedding
Never use cedar or pine shavings. Both release toxic aromatic compounds that are absorbed through the respiratory tract and enter the bloodstream. These chemicals destroy cells lining the lungs and trachea, elevate liver enzymes, and suppress immune function. One study found that 56% of rat pups raised on cedar shavings died by two weeks of age, compared to virtually none raised on aspen or corn cob bedding.
Safe options include aspen shavings, paper-based bedding (pellets or pulp), or fleece liners. Paper pellets absorb moisture well and hold it in one place without falling apart. Fleece liners are reusable and popular, though they require regular washing. Avoid clay or sand cat litters, which create dust. Also skip corn cob litter, as rats may eat it, and it can produce irritating compounds.
Cleaning Schedule
Rats communicate through scent, so cleaning too frequently can actually stress them out. Research comparing twice-weekly, weekly, and every-two-week cleaning found no major welfare differences, though more frequent cleaning did reduce ammonia levels while also making rats slightly less comfortable being handled. A good practical schedule is spot-cleaning daily (removing soiled bedding and uneaten fresh food) and doing a full bedding change once a week. Wipe down platforms and shelves during the weekly clean.
Food and Water
Formulated pellets or lab blocks should make up about 90% of your rats’ diet. Choose a product specifically made for rats with 14 to 16 percent protein and 8 percent fat or less. Avoid seed mixes as a primary diet, since rats will pick out the fatty seeds and leave the nutritious bits behind, leading to an unbalanced diet.
The remaining 10% can be fresh fruits and vegetables: small pieces of broccoli, peas, banana, berries, or leafy greens. These double as treats and enrichment. Foods to avoid include chocolate, caffeine, alcohol, onions, garlic, grapes and raisins, raw yeast dough, macadamia nuts, avocado, and anything containing xylitol (a sweetener found in sugar-free gum and some peanut butters). Keep salty and fatty foods away from your rats as well.
A glass water bottle with a sipper tube is the standard. Check it daily to make sure it’s dispensing properly and refill with fresh water. A small ceramic dish can work as a backup but will get dirty quickly.
Hideouts and Enrichment
Rats need places to sleep, hide, and feel secure. Plastic igloos (often called space pods) are a popular choice and easy to clean. Hammocks made from fleece are inexpensive and rats love lounging in them. You can hang multiple hammocks at different levels in the cage. Cardboard boxes and toilet paper tubes work as free, disposable options that also satisfy chewing instincts.
If you want to add an exercise wheel, it needs to be 12 to 15 inches in diameter with a solid running surface, not rungs. A wheel that’s too small forces your rat into an arched-back position that can damage their spine over time. On the correct size wheel, the rat’s back stays straight, the head aligns with the shoulders, and the gait looks natural and relaxed.
Beyond cage accessories, rats need daily time outside the cage to explore and interact with you. A rat-proofed room or a large playpen on a table gives them space to roam. Foraging games, teaching simple tricks, and just handling them regularly all count as enrichment. Rats are intelligent and trainable, and they genuinely bond with their owners.
Veterinary Care
Before you get rats, find a vet who treats exotic or pocket pets. Not every veterinary clinic has experience with rats, and you don’t want to be searching for one in an emergency. Respiratory infections are the most common health issue, largely driven by a bacterium called Mycoplasma pulmonis that most rats carry from birth. It’s manageable but not curable.
Signs of a respiratory flare-up include sneezing, audible breathing or crackling sounds, nasal discharge, and a hunched posture. Red-brown staining around the eyes and nose (sometimes mistaken for blood) is actually a stress secretion called porphyrin and often signals that your rat isn’t feeling well. A ruffled coat and weight loss are later-stage warning signs. Catching respiratory symptoms early and getting antibiotics from your vet makes a significant difference in outcomes.
Quick Supply Checklist
- Cage: Wire with half-inch bar spacing, solid floor, multiple levels
- Bedding: Aspen shavings, paper pellets, or fleece liners
- Food: Rat-specific lab blocks (14–16% protein, under 8% fat)
- Water bottle: Glass sipper bottle, checked daily
- Hideouts: At least two per rat (igloos, hammocks, cardboard boxes)
- Exercise wheel: 12–15 inches, solid surface (optional but beneficial)
- Toys and chews: Ropes, tunnels, wooden chew blocks, foraging puzzles
- Fresh food: Small portions of vegetables and fruit for treats
- Exotic vet: Located and confirmed before bringing rats home
Budget-wise, the cage is the biggest upfront cost, typically running $80 to $200 depending on size. Ongoing monthly costs for food, bedding, and the occasional vet visit are modest compared to dogs or cats. The real investment is your time. Rats thrive on interaction, and the more you handle them, the more personality they’ll show you.