Size

9-10 cm, excluding tail

Weight

0.5-1.5 grams (birth), 20-40 grams (adult)

Body temperature

97-100F

Heart rate

325-780 beats per minute

Respiratory rate

94-163 per minute

Adult food consumption

10-15 grams per day

Adult water consumption

15 ml per day

Chromosomes

40

Gestation period

21 days

Captive lifespan

1.5 to 2 years although 4 years has been known