Ojos Azules
Overview These cats usually impress one immediately with their sweet and appealing expression and their large and lovely...
Old Danish Pointer
History & Overview The Old Danish Pointing Dog, known in his native Denmark as Gammel Dansk Hønsehund, is...
Old English Sheepdog (Bobtail)
Overview The Old English Sheepdog, also known affectionately as Bobtail, is probably the most huggable breed in the...
Optic Nerve Hypoplasia
Overview Two important congenital disorders that affect the optic nerve and optic disk in dogs are Coloboma which...
Oriental Fire-Bellied Toad (Bombina orientalis)
Overview Oriental Fire-Bellied Toad (Bombina orientalis) is one of the most popular frogs in the world. Its common...
Oriental Shorthair
History & Overview Ancestors of all Oriental and Foreign breeds, whether Siamese or those resulting from Siamese and Oriental Shorthair...
Osmanthus delavayi
Overview Osmanthus delavayi has dark glossy leaves and a neat compact habit. The small white flowers are very...
Osteochondrodysplasia
What Is Osteochondrodysplasia? Osteochondrodysplasia is a form of osteoarthritis affecting skeletal development, growth and maintenance of cartilage and bone....
Osteochondrosis Dissecans
What Is Osteochondrosis Dissecans? Osteochondrosis Dissecans(OCD) is a disease characterized by abnormal development of growth cartilage. It occurs...
Otterhound
History & Overview The origin of Otterhound is unknown. The earliest mention of Otterhound in history was in...