Bullmastiff dog breed pictures - américa toro perro imágenes - weiner cane immagini
A classic example illustrating some of the problems encountered in trait-selective breeding can be found in the history of the Dalmatian. Breeding for the sharply-defined spot trait unintentionally also led to selective breeding for an abnormal uric acid gene (case of gene linkage). The result was that the Dalmatian dog breed was dogged (no pun intended) with hereditary urine stone disease. In an attempt to rectify the problem yet retain the desired spot pattern, the Dalmatian was crossbred with various Pointer breeds (Sniff! Sniff! What did I tell you…all mutts the lot of them!).
