What do you call a border collie and chihuahua mix?

A Border Collie and Chihuahua mix is called a Border Chigi. More than 50 different Chihuahua mixes exist. According to the We Love Chihuahuas website, the dogs are delightful and possess interesting looks and characters.

Crossbred dogs inherit characteristics from each parent. However, We Love Chihuahuas warns that breeders cannot always predict how crossbreeds turn out. It's possible that the mix may not be 50 percent of each species, as multigeneration crosses are common. This means the mix may have been bred from two dogs that were not purebreds. For this reason, there is a wide range of designer dogs, according to We Love Chihuahuas.