Theoretically, you could cross a tiny Chihuahua with any other type of dog. Just imagine what a Chihuahua and Great Dane mix would look like. For practical purposes though, Chihuahuas are generally crossed with other small breeds to create hybrid "designer dogs." Since Chis are the smallest of all purebred dogs -- not exceeding 6 pounds at maturity -- any cross will likely result in a canine at least slightly larger than the Chihuahua.
Types of Chihuahua Mixes
The American Kennel Club describes the Chihuahua as "charming, graceful and sassy." A Chi mix might possess some or all of those attributes, combined with the characteristics of the other breed. Chi coats may be smooth or long, and the Chi breed standard permits any color, along with splashed or marked coats. That means Chi crosses don't just inherit small size, but a canine palette of possible hair shades. They could also inherit Chi attitude, which the breed standard describes as "self-importance, confidence and self-reliance." Or sassy.
Cross a Chihuahua with a Yorkshire terrier and the result is a Chorkie. The American Kennel Club states that the Chi has "terrier-like" qualities, and in the Chorkie these qualities are emphasized. The Yorkie can't exceed 7 pounds in adulthood, according to its breed standard. Yorkies boast fine, silky blue-and-tan hair. Your Chorkie will probably have long facial hair. Chorkies are a bit more active than Chis but don't require a lot of exercise.
The Chi Poo
The Chi poo is the name given to the Chihuahua poodle mix. As with other poodle blends, the dog should have a curly, non-shedding coat. Chis are usually crossed with toy or miniature poodles, not the larger standard size. Toy poodles mature under 10 inches high at the shoulder, while miniature poodles stand between 10 and 15 inches tall. Both poodles and Chis appear in a variety of colors, so Chi poos might be any shade. A Chi poo might inherit the upright ears of the Chihuahua parent or the drop ears of the poodle.
Long, low and small -- that's the Chiweenie, a mix of Chi and dachshund. Doxies appear in smooth, wire-haired and long-haired versions, so the Chiweenie's coat depends on the parent breeds. Size depends on whether a Chiweenie's dachshund parent was a miniature -- under 11 pounds -- or standard, ranging from 16 to 32 pounds. That's for showing purposes.
There are certainly plenty of "tweenies," or doxies between 12 and 15 pounds. Dachshund colors include red, or black-and-tan, gray-and-tan and fawn-and tan. The tan markings appear on the jaw, inner ear, chest, the inner front legs, anal region and partially under the tail.
Chihuahua plus pug equals Chug. Pugs are a brachycephalic, or short-nosed breed. That means they can suffer from respiratory and other problems related to their facial structure. When choosing a Chug puppy, look for one with the longer snout of the Chi parent. Such a dog may withstand hot weather and other situations triggering breathing issues better than a short-nosed canine. Pugs weigh between 14 and 18 pounds when full-grown, so the Chug is a little larger than many Chi mixes. Pugs are either fawn or black, but Chugs may vary.
The Malchi results from a mix of Maltese and Chi. The Maltese breed standard doesn't permit a dog larger than 7 pounds, with 4 to 6 pounds the preferred size. Since this is a similar size to the Chi, it's one of the smaller crossbreeds. Maltese are always white and sport long, silky hair. The Malchi might be solid white, or end up spotted or another color based on Chi ancestry.