Castração em cães pequenos aumenta risco de obesidade, aponta estudo

A large-scale study of over 155,000 dogs has added scientific weight to a long-held veterinary intuition: neutering alters a dog's metabolism and behavior in ways that meaningfully raise the risk of obesity, though not equally for all animals. The vulnerability falls hardest on small-breed males, and the timing of the procedure shapes the outcome — dogs neutered earlier in life faring better than those altered later. In Brazil, where a quarter to nearly half of domestic pets already carry excess weight, the findings arrive as both confirmation and caution. The surgery remains a responsible cho