| First used for |
Companion |
| Country of origins |
Mexico |
| Year of origin |
1800s |
| Colors |
Any color, mixed colors included |
| Height (min) |
6 inches (15 cm) |
| Height (max) |
9 inches (23 cm) |
| Weight (min) |
2 lbs (1 kg) |
| Weight (max) |
6 lbs (3 kg) |
| Life expectancy (min) |
15 years |
| Life expectancy (max) |
17 years |
|