Cleft Palate and Vitamin or Fish Oil Supplements - Article on how too much vitamin A given to pregnant bitches and queens can cause cleft palate in their puppies and kittens. Cleft Palate and Vitamin A - ProVet healthcare informational article on high vitamin A supplementation during pregnancy predisposing to cleft palate in puppies and kittens. Lutein - ProVet healthcare information article on lutein in companion animal nutrition. Niacin - ProVet healthcare information article on the role on niacin in pets. Rickets - ProVet healthcare information article explaining what rickets is. Vitamin A - ProVet healthcare article discussing excesses and deficiencies of Vitamin A in the animal diet. Vitamin B Complex in Renal Failure - ProVet pet healthcare information article, reviewing the importance of the B vitamins in kidney failure. Vitamin E - ProVet healthcare information article on vitamin E as an essential component of every pet's diet. Arsenic - ProVet healthcare article on the benefits of feeding arsenic to animals. Silicon - Provet healthcare information article on silicon as an important trace mineral for animals. Orthomolecular Specialties: Your Pet’s Health - Dr. Wendell Belfield, DVM provides information on the use of certain nutritional compounds for the treatment, prevention and control of specific conditions and diseases.