sentences:  They have short front legs and long, powerful hind legs that aid in climbing and jumping.Short-tailed chinchillas have thicker necks and shoulders, and have shorter tails than their long-tailed relatives by a little over one inch (up to 100 mm (3.9 in) compared to 130 mm (5.1 in)).Domestic chinchillas have tails measuring 3 to 6 inches long.