Rodents

The head-and-body of the Prevost's squirrel typically is 20–27 cm (8–11 in) long and the tail length is about the same; it weighs 250–500 g (9–18 oz).

In captivity, they live up to 17 years.

Caucasian squirrels are small tree squirrels, with a total length of 32 to 36 cm (13 to 14 in), including the 13 to 18 cm (5.1 to 7.1 in) tail, and weighing 250 to 410 g (8.8 to 14.5 oz).

The squirrel's total body length measures 45 to 70 cm (17.7 to 27.6 in), tail length is 20 to 33 cm (7.9 to 13.0 in), and they range in weight from 500 to 1,000 grams (1.1 to 2.2 lb).

Body length 50-70 cm, weight of males reached 5.7 kg. Life expectancy in captivity is up to 15 years.

A female Siberian flying squirrel weighs about 150 grams, the males being slightly smaller on average. The body is 13–20 cm long, with a 9–14 cm long flattened tail.

They can live up to about five years.

The degu is a small animal with a body length of 25.0 to 31.0 cm (9.8–12.2 in) and a weight of 170 to 400 g (6.0 to 14.1 oz).

Body length 10cm, tail length 5cm. Life expectancy is about 3 years.

The jerboa body length ranges from 5–15 cm and has a tail ranging from 7–25 cm. The typical lifespan of a jerboa is around six years.

The length of their feet is usually 50 to 61 mm, body length is 230 to 310 mm and tail length is 144 to 195 mm.

The longest a Euphrates jerboa has lived in captivity is 4 years and 2 months.

Chinchilla lanigera is smaller—wild animals have body lengths up to 260 mm (10 in)—has more rounded ears—45 mm (1.8 in) in length)—and a longer tail than C. chinchilla; its tail is usually about a third the size of its body—up to 130 mm (5.1 in) compared to 100 mm (3.9 in) in C. chinchilla.