Some Cavapoos are yappy and bark a lot.
However most Cavapoos are pretty quiet dogs and don't bark much at all unless they really need too.
My Grandma had a Cavapoo dog and he would bark a lot and was pretty yappy and quite frankly annoying to be around.
Whenever she had company the dog had to go outside in a fence if it were warm enough.
Otherwise the Cavapoo dog would never shut up.
But some other Cavapoos I've been around have been pretty quiet but of course they would bark some and they do have a yappy annoying bark.
The Cavapoo dog breed is a crossbreed dog that is created by mixing the Cavalier King Charles Spaniel and the Poodle.
A Cavapoo will bark to alert their family if a stranger is approaching the house just like other dog breeds will do.