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    Red-tailed Hawk

    Overview The distant, soaring buteo that holds its position in a stiff breeze as if "pinned to the...

    Redtail Catfish

    Overview Redtail Catfish (Phractocephalus hemioliopterus), known as pirarara in Brazil, is a species of long-whiskered catfishes (Pimelodidae). Although...

    Renal Dysplasia

    What Is Renal Dysplasia? Renal Dysplasia belongs to the group of common familial kidney disorders in cats and...

    Reproductive Disorders (Female)

    Reproductive Disorders In Female Dogs In the female dog, the reproductive system consists of all those organs that...

    Reproductive Disorders (Male)

    Reproductive Disorders In Male Dogs Cryptorchidism means that neither testicle of the dog has descended. A dog with...

    Retinal dysplasia

    What Is Retinal Dysplasia? Retinal dysplasia is an abnormal development of the retina, which is a layer of...

    Rhodesian Ridgeback

    History & Overview The Rhodesian Ridgeback is a breed of mixed ancestry as are so many other of...

    Roadside Hawk

    Appearance The Roadside Hawk (Rupornis magnirostris), also known as Gray-tailed hawk, Large-billed Hawk and tropical Broad-winged Hawk, is...

    Rose Mallow

    Overview Rose Mallow (Lavatera trimestris) is a hardy, easily grown, tall (47 in) annual, producing shallow funnel-shaped flowers...

    Rottweiler

    History & Overview Today this breed is universally known as Rottweiler, but in earlier times it was sometimes...

    Rowan and Rowanberry

    Overview Rowans in genus Sorbus are native throughout the cool temperate regions of the Northern Hemisphere. The genus Sorbus includes about 100...

    Rudd

    Overview The Rudd (Scardinius erythrophthalmus) is medium-sized, top-feeding species that can grow to 20 - 25 cm and...

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