Yes, vitamin A is an essential nutrient for dogs.
It is necessary for the healthy vision of dogs. Vitamin A plays a vital role in the synthesis of a photopigment known as rhodopsin which is vital for the night vision. It is also required in the production of iodopsin that aids the perception of colour.
Vitamin A also plays a vital role in the synthesis of reproduction hormones, immune response, bone growth and regulating the growth of skin cells. (1)
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