"Appeasement behaviors" refers to actions or decisions made by someone in order to avoid conflict or hostility, often by giving in to the demands or wishes of others. Full definition
However, some dogs may choose appeasement behavior. (pethelpful.com)
Unlike a pariah dog it will not show appeasement behavior (begging or groveling) but will normally isolate itself to avoid being bullied. (petpeoplesplace.com)
Appeasement behaviors include holding the ears back, tucking the tail, crouching or rolling over on the back, avoiding eye contact or turning the body sideways to the perceived threat. (aspca.org)