Final answer:
Humans have an advanced capacity for language not seen in non-human apes, who can only use rudimentary communication methods.
Step-by-step explanation:
One behavioral difference between humans and non-human apes is our capacity for complex language. While human-reared chimpanzees, gorillas, bonobos, and orangutans have been taught to use gestures or tokens to communicate and even combine signs in a rule-based manner, this form of communication is considered a rudimentary protolanguage. In contrast, humans possess a far more advanced capacity for abstract thought, enabled by our complex brains, allowing for intricate language structures, written scripts, and the ability to discuss abstract concepts.