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You are here: myPetSmart.com > Care Guides > Fancy Mouse Setup Steps

Fancy Mouse (Mus musculus domesticus)

Experience Level: Beginner

Fancy mouse

Fancy Mouse

Did you know? Mice are very curious and can fit their bodies through any space their heads can fit into. Adult mice have gotten through holes the size of a dime.

Step 1Choosing a Habitat

• Fancy Mice can live together in same gender pairs.

• Mice may become territorial and aggressive so one (A) food bowl,  (B) water bottle and exercise wheel is needed per pet.

• Your Fancy Mouse needs a wire or plastic home with a snug-fitting lid (mice are good climbers and will try to find a way out). It should be large enough for a food dish, water bottle, a small house for sleeping and an exercise wheel.

• Minimum cage size is 12x12x12" with wire spacing no larger than 1/2" apart.

• Multilevel homes are preferred since they provide additional space for exercising.

Cage Placement
• Place the habitat in a cool 65-75º F (18-24º C), low humidity area, out of direct sunlight.

Step 2Play and Hide

These items are essential for your mouse’s comfort, health and well-being.

Exercise Wheel
(C) Remember mice are nocturnal and may use the exercise wheel after your bedtime. To protect your pet’s tail, make sure the surface is solid. Mice also enjoy running in an exercise ball when outside of their habitat.

Hide House (not pictured)
Hide houses should be easily cleaned. Edible homes are also available and give the additional benefit of encouraging normal chewing behavior.

Chew Toys (not pictured)
Your Fancy Mouse’s front teeth never stop growing, so your pet needs lots of healthy things to chew on, like treat sticks and chews. Chew toys should be available at all times.
• Nesting Material (not pictured)

• Mice will shred material and make sleep areas.

• Paper and cotton fabrics are acceptable.

Step 3Bedding

(D) Fancy Mice love to hide and burrow, so provide lots of clean aspen, pine or recycled paper bedding. Line the home with 1-2" of bedding.
• Cedar shavings are not recommended for small pets.

• Bedding should be spot cleaned weekly and completely changed monthly.

Fancy Mouse Habitat


New surroundings and environments can be stressful for Small Pets. Prior to handling your pet, give her 3-4 days to adjust to her new surroundings while monitoring her behavior for any signs of excessive stress or illness.


• Cloudy, sunken or swollen eyes

• Overgrown front teeth

• Bare patches in the fur

• Diarrhea or discolored droppings

• Lethargic behavior

• Weight loss; not eating or drinking normally

• Sneezing; discharge from the eyes, nose or mouth

If you notice any of the signs described above, speak with a PetSmart store associate or small animal veterinarian about the health of your pet.

PetSmart Cares
Pets purchased at PetSmart are a part of our exclusive Vet Assured™ program; a program designed by PetSmart veterinarians to help improve the health and well-being of our pets.

The program includes:
• Specific standards our vendors agree to meet in caring for and observing pets for common illnesses.

• Specific standards for in-store pet care.

• The PetSmart Promise: If your pet becomes ill during the initial 14-day period, or if you’re not satisfied for any reason, PetSmart will gladly replace the pet or refund the purchase  price.