This pigment is called carotene. When fed to dogs, carotene is easily converted by the intestinal cells into the usable vitamin A. Not so in cats. This fact is very important in the proper formulation of supplements. Too often pet owners are only concerned with the amounts of vitamin A, when in reality the type of the vitamin is the most important factor. For this reason, beware of off-brand vitamin tablets or foodstuffs.
Quality is more important than quantity.
Vitamin A, once ingested, is stored in fat cells mainly within the liver. Here it remains until needed by the body. Vitamin A has many roles. It is important for vision and other functions. To those who raise puppies, the vitamin A link to growth is of prime importance.