Guinea Pig Physiology

Life expectancy Up to 8 years, usually 4-5 years
Environmental temperature Ideally 20 – 22° C (15 – 18° C acceptable)
Food intake 6g per 100g bodyweight
Water intake 8ml per 100gm bodyweight
Sexual maturity 4 – 6 weeks
Breeding age 4 – 5 months 500-550gm
Gestation Period 59 – 72 days depending on litter size
Birthweight 75 – 100gm average
Lactation 3 weeks
Rehoming age 6 – 8 weeks
   
Other Useful Books A Colour Atlas of Anatomy of Small Laboratory Animals

Guinea Pig Head from A Colour Atlas of Small Laboratory Animals

Useful Links Anatomy of the Cavy from David Hardesty’s Image Library
  Information on cavy physiology from:

Diseases of Domestic Guinea Pigs by V.C.G. Richardson
Publisher Black Scientific  ISBN number 0-632-03301-0