How much does the dog breed affect his health and behavior?

In some cases, these health problems appeared as by -products in the subdivision. Because the breeds are genetically closed populations, a mutation that causes a disease that happens that one dog appears, can quickly become common in future generations. “Especially if the animal with this mutation is otherwise a reward sample,” said Dr. Serpell. “Because everyone will want to reproduce from this unit.”

As a result, many up-to-date breeds suffer from ailments that dog lovers would never have chosen intentionally. Labrador Retrievers are susceptible to degenerative eye disease known as progressive retinal disappearance, while Cavalier King Charles Spaniels often develop a heart disease called mitral valve disease.

In other cases, the physical features that breeders are looking for may be a problem themselves, especially since these features are becoming more and more exaggerated. Dr. Serpell said that the standard of bulldogs clearly requires “very tiny” muzzles, but over time the dogs of dogs almost disappeared, which results in earnest breathing problems.

Dr. Bannasch said that Mutts and mixed dogs can be healthier than cleaner, especially if they have petite amounts of DNA from many different types of breeds.

However, she said that some mixed dogs can still be very infected, and some health problems are common in many breeds. For example, many gigantic breeds are prone to bone cancer; Combining several of them may not bring many benefits. “You can’t combine all” mixed breeds “,” she said.

The relationship between breed and behavior is more murky.

By creating contemporary races, people usually put a much stronger emphasis on appearance than behavior, which is also shaped by a dog training and an early environment.

“Behavioral features vary depending on the breed, but not as strongly as morphological features,” said Dr. Boyko. “You will never get a collie that looks like great data,” he added. “But I see that many dogs show indicating behaviors that are not indicators.”

Scientists have discovered some general patterns. Terriers, which have been bred to hunt and kill pests, more often show “predatory prosecution” than breeder dogs. And average Husky Siberian howls more often than Labrador Retrievers.

But in general the breed is a needy predictor of behavior and there are more differences in races than between them, the scientists said. Someone who wants a amiable, loving dog dog who does not bark, cannot satisfy it exactly, bringing Labrador Retriever home. “You can get exactly the opposite,” said Dr. Lord.