Are all dogs crossbred

 
Together with cats, dogs are among the most popular pets in Germany. Hard to believe, but all of them today Dog breeds descend from the wolf. Through targeted breeding, many different breeds have emerged, some of which differ from one another very clearly in terms of appearance and character. Humans began domesticated, i.e. breeding and taming, wild wolves at least 20,000 years ago. Other estimates even assume more than 80,000 years.

By the way, we are not talking about types of dogs, but breeds of dogs. The reason is purely biological: while species can look very similar and are also 'very close' in phylogeny (e.g. chimpanzees and orangutans), they cannot produce fertile offspring. This is different with animal breeds, in which the appearance also differs significantly in some cases (e.g. German Shepherd Dog and Yorkshire Terrier), but reproduction is still possible. All dog breeds can theoretically be crossed with one another, so that one speaks of a common breed, the domestic dog (Canis lupus familiaris).
The following is an overview of the most popular dog breeds.