Life span: 1 - 3 years
Body weight:
Male: 20 - 40 grams
Female: 22 - 63 grams
Sexual maturity: 6 weeks
Breeding season: none
Type of estrus cycle: polyestrus
Duration of estrus: 4 - 5 days
Type of ovulation: spontaneous
Length of gestation: 19 - 21 days
Weight at birth: 1 - 1.5 grams
Eyes open: 12 - 14 days
Ears open: 12 - 14 days
Weaning age: 3 weeks
Average heart rate: 425 - 625 beats per minute
Average respiratory rate: 90 - 215 breaths per minute
Average rectal temperature: 101 - 103 degrees Fahrenheit
Optimal housing temperature: 65 - 75 degrees Fahrenheit
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