Sex

Sealyham Terriers, like most dog breeds, reach sexual maturity at different ages. Typically, Sealyham Terriers reach sexual maturity between the ages of 6 to 12 months. This means that they are physically capable of reproducing.

However, responsible breeding practices often involve waiting until the dog has reached full physical and mental maturity before considering breeding. Full maturity for Sealyham Terriers is generally around 18 to 24 months of age. This allows the dog to fully develop both physically and mentally before embarking on the responsibilities of breeding.

Breeding a dog before it has reached full maturity can have negative consequences for the health and well-being of the dog and its offspring. Waiting until the dog is fully mature helps ensure that they are physically and mentally sound, reducing the risk of potential health issues and improving the overall quality of the breeding.

Responsible breeders carefully consider the health, temperament, and genetic background of both the male and female Sealyham Terriers before deciding to breed. They may also conduct health screenings and evaluations to ensure that the dogs are free from hereditary conditions that could be passed on to their offspring.