Xoloitzcuintlis come in three sizes: toy, miniature, and standard. 

• Toy: Weighs between 5 to 15 pounds and stands about 10 to 14 inches tall.
• Miniature: Weighs between 10 to 25 pounds and stands about 14 to 18 inches tall.
• Standard: Weighs between 20 to 50 pounds and stands about 18 to 23 inches tall.

Xoloitzcuintlis are known for their calm, intelligent, and affectionate nature. They are loyal and form strong bonds with their families. Often considered protective, they may be reserved with strangers but usually warm up quickly with proper socialization. They are generally good with children and other pets, making them excellent companions.

The Xoloitzcuintli can be found in two varieties: hairless and coated. The hairless variety has smooth, tough skin and may have some tufts of hair on the head, tail, or feet; they come in various colors, including black, gray, red, and chocolate. The coated variety has a short, dense coat and can have similar color variations. Regular skin care is essential for the hairless variety to prevent sunburn and maintain skin health.

Xoloitzcuintlis thrive in environments where they receive attention and companionship. They adapt well to a variety of living situations, including apartments, but they require regular interaction and mental stimulation to avoid boredom. The hairless variety should be protected from cold weather, while the coated variety is more resilient to temperature changes.

Xoloitzcuintlis enjoy a variety of activities, including walks, playtime, and interactive games. They benefit from training sessions that challenge their minds and help them learn new commands. Regular exercise is important for keeping them healthy and happy, and they may also enjoy participating in dog sports, obedience competitions, or agility.