v. dial. [Onomatopœic extension of LOP v.2] intr. To move or run with a heavy gait. Usually of an animal, as a hare or rabbit, rarely of a person. Hence Loppeting vbl. sb.
1864. C. Bryant, in Buckland, Log-bk. (1875), 320. They [seals] travel by lifting themselves from the ground on their forelegs, and hitching the body after them with kind of sideways loppeting gallop.
1888. Berksh. Gloss., Loppettin, walking with an ungainly movement and heavy tread.