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Reproductive System Overview - Anatomy & Physiology (view source)

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== Small Domestic Mammals ==

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* [[Small Mammals -Reference Table of Reproductive Characteristics for Small Domestic Mammals- Anatomy & Physiology|Reference Table of Reproductive Characteristics for Small Domestic Mammals]]

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~~!'''Species'''~~

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~~!'''Rabbit'''~~

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~~!'''Chinchilla'''~~

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~~!'''Chipmunk'''~~

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~~!'''Gerbil'''~~

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~~!'''Guinea Pig'''~~

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~~!'''Golden Hamster'''~~

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~~!'''Mouse'''~~

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~~!'''Rat'''~~

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~~| '''~~Reproductive ~~Pattern'''~~

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~~| No True Oestrous Cycle~~

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~~| Seasonally Polyoestrous:Breeds November~~-~~March~~

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| ~~Seasonally Polyoestrous:Breeds March-September~~

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~~| Polyoestrous~~

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~~| Polyoestrous~~

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~~| Polyoestrous~~

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~~| Polyoestrous~~

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~~| Polyoestrous~~

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~~| '''Length~~ of ~~Oestous Cycle'''~~

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~~| Every 4 days~~

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~~| 30-35 days~~

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~~| 14 days~~

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~~| 4-6 days~~

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~~| 15-16 days~~

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~~| Every 4 days~~

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~~| 4-5 days~~

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~~| 4-5 days~~

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~~| '''Type of Ovulation'''~~

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~~| Induced:Occurs Within 10 hours of Mating~~

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~~| Spontaneous~~

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~~| Spontaneous~~

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~~| Spontaneous~~

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~~| Spontaneous~~

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~~| Spontaneous~~

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~~| Spontaneous~~

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~~| Spontaneous~~

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~~| '''Gestation Period'''~~

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~~| 28-32 days~~

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~~| 111 days~~

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~~| 28-32 days~~

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~~| 24-26 days~~

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~~| 63 days~~

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~~| 15-18 days~~

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~~| 19-21 days~~

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~~| 20-22 days~~

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~~| '''Average Litter Size'''~~

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~~| 2-7~~

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~~| 2-3~~

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~~| 2-6~~

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~~| 3-6~~

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~~| 2-6~~

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~~| 3-7~~

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~~| 6-12~~

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~~| 6-12~~

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~~| '''Type of Young at Birth'''~~

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~~| Altricial~~

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~~| Precocial~~

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~~| Altricial~~

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~~| Altricial~~

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~~| Precocial~~

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~~| Altricial~~

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~~| Altricial~~

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~~| Altricial~~

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~~| '''Weaning Age'''~~

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~~| 4-6 weeks~~

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~~| 6-8 weeks~~

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~~| 6-7 weeks~~

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~~| 3-4 weeks~~

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~~| 3-4 weeks~~

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~~| 3-4 weeks~~

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~~| 18 days~~

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~~| 3 weeks~~

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~~| '''Age of Sexual Maturity'''~~

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~~| 5-8 months~~

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~~| 8 months~~

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~~| 12 months~~

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~~| 10-12 weeks~~

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~~| 6-10 weeks~~

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~~| 6-10 weeks~~

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~~| 3-4 weeks~~

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~~| 5-6 weeks~~

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~~''Key Words''~~

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* '''Altricial''': newly born young are relatively immobile, have closed eyes, lack hair, and must be cared for by the adults. Altricial young are born helpless and require care for ~~a comparatively long time.~~

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* '''Precocial''': young have open eyes, have hair, large brains and are immediately mobile and somewhat able to defend themselves against predators.

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