Anthropomorphism (giving human characteristics to an animal) was probably solidified in this day and age by Walt Disney. That’s just my opinion, but given that and $3.00, you could come away with a decent cup of coffee.
I find myself guilty of this many times over. Not just people talk in my novels, but the majority of creatures with a heartbeat tend to spew out conversational pieces better than most Americans. Of course, American English being what it is, speaking it in some form is not a difficult feat.
The all-time voice of voices was Mel Blanc. Able to stream the dialogue from every character in a single cartoon, including Bugs Bunny, Tweety Bird and everyone in between, was absolutely amazing.
Fortunately, as I write I am able to see and hear my characters as I create them. Even the ambient noise comes to life as I pen each novel. I am so appreciative to God for giving me the ability to place my imagination on paper. Now it’s up to me not to blow it!