<<<How do I ask Dr. Susan a question??
Since people &animals get Vitamin "D" by being in sunlight. What
happens to indoor only cats when they don't get this vitamin? >>>
Cats do not have enough 7-dehydrocholesterol in their skin to synthesis
vitamin D by photosynthesis (from the sun) as people do. This makes sense
when you consider the fur coat cats have (and that people don't). Cats
require preformed vitamin D in their diets. Hunting cats get their vitamin D
by consuming the liver and body fat of their prey. Commercial cat foods are
supplemented with vitamin D. Vitamin D deficiency is extremely rare in the
cat, I think it has only occurred experimentally.
Dr. Susan
Chapter Author, A Home Veterinary Guide, in:
The CFA Complete Cat Book
http://www.cfainc.org/catalog/books.html#completecatbook
Feline Reproduction Manual:
http://catvet.homestead.com/ReproCD.html
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Susan Little, DVM
Diplomate ABVP (Feline)
Bytown Cat Hospital
Ottawa, Canada
http://catvet.homestead.com
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