| First used for |
Herding sheep |
| Country of origins |
USA |
| Year of origin |
1800s |
| Colors |
Blue, blue merle, red merle, black |
| Height (min) |
18 inches (46 cm) |
| Height (max) |
23 inches (58 cm) |
| Weight (min) |
35 lbs (16 kg) |
| Weight (max) |
70 lbs (32 kg) |
| Life expectancy (min) |
12 years |
| Life expectancy (max) |
15 years |
|