A rattle will only make noise if you shake it. Animals like the wolf also understand such connections and are better at this than their domesticated descendants. Researchers say that wolves have a better causal understanding than dogs and that they follow human-given communicative cues equally well. The study provides insight that the process of domestication can also affect an animal's causal understanding. [1] Leave the butterfly free and it will learn how to fly. Try to teach it how to fly, and (at least in some cases) you watch it crawl…
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