Context: Domestic dogs inherited complex behaviors, such as bite inhibition, from their wolf ancestors, which would have been pack hunters with complex body language. These sophisticated forms of social cognition and communication may account for their trainability, playfulness, and ability to fit into human households and social situations, and these attributes have given dogs a relationship with humans that has enabled them to become one of the most successful species on the planet today.:pages95-136

Question: What is one of the complex behaviors pet dogs have gotten from wolves?
Answer: bite inhibition

Question: What may make dogs have the ability to be trained by, play with and fit in with people?
Answer: sophisticated forms of social cognition and communication

Question: Higher social attributes  and human relationships may have caused dogs to reach what as a species?
Answer: one of the most successful species on the planet today.

Question: What is a complex behavior that dogs inherited from wolves?
Answer: bite inhibition