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.

1

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.

2

1888.  Berksh. Gloss., Loppettin’, walking with an ungainly movement and heavy tread.

3