Leonard - RIP
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http://fnae.org/index.html Feline Nutrition Awareness Effort Lynn Curtis is a former, professionally-trained, veterinary technician and has been a feline advocate for more than two decades. She has spent more than 25 years working in the fields of biology and chemistry. ...Chromosomal EvidenceDomestic cats have 38 chromosomes (strands of DNA in a cell’s nucleus that carry genes) while dogs have 78. This demonstrates that cats ceased evolving further after reaching their obligatory carnivorous status, genetically. They never evolved to incorporate plant materials into their diets. ...Vitamin A occurs naturally, only in animal tissues. While omnivores and herbivores can convert beta-carotene (an inactive form from plants) to vitamin A, cats cannot convert β-carotene into the usable vitamin A they need and therefore need the preformed version from their diet. ...Fatty Acid RequirementsCats also require an essential fatty acid, arachidonic acid, found only in meat. Cats cannot convert linoleic acid provided by plant sources into arachidonic acid...http://fnae.org/basics.html