A full grown Flying Squirrel will weigh only 3 to 5 ounces. If properly fed, they can live up to 15 years. They are nocturnal, but do not mind being woken up during the day. The nest box should be furnished with cotton, shavings, or grass hay for bedding. As with all animals, they require a constant supply of water.
Some owners prefer water bottles while others like dishes.
If you choose a dish to supply their water needs, make sure it is shallow enough so they cannot drown. Non-toxic branches, bird perches, and an exercise wheel are also important for exercise. Their nutritional requirements are easy to take care of. They eat very little, but what they are fed is very important. Most Flying Squirrels eat a few grams of commercial pelleted feeds per day.