Older dog yelping, not fighting back, but young pitbull not stopping until pulled off by me. Older dog never has overtly established dominance, and was not fighting back after initial skirmish, but we are concerned that if left alone the pitbull will again escalate and kill older dog.
Young dog is otherwise very submissive, and very friendly to all animals and people.
Easily trained and wiling to take direction. Thanks for any comments.