There are few animals which exhibit such a variety of eye shapes as the dog family. One encounters the large, protruding, badly protected eye of the Pekinese; the ‘varminty’ eyes of the Terriers, with very little eye protruding through the lids. There are various intermediate stages laid down for particular breeds, nearly three hundred of them. One must remember that the domestic dog has become an artificial representative of its early progenitors and that all breeds from minute Chihuahua to the St Bernard have all been created by preserving and interbreeding all the freak mutations which have appeared through the centuries.
KeywordsVitreous Humour Binocular Vision Vitreous Body Palpebral Fissure Ciliary Muscle
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