system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why can't we understand animals?

For example dolphins communicate with whistles and clicks, why haven't we been able to interpret them or figure out what they're saying?
gpt
Well we can. If you look for information you will see that we know a lot about dog's communication. There is two problems that we face.

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1) Animals communicate, but don't have a language. A language is precise, but communication is messy. Try communicate with someone without using language, you have far less diversity in the mean you have and that make your communication more limited and less complex than if you would use a language. 

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2) We need to observe the communications to understand it. It's easy to do with a dog, far less to do with dolphin, so of course we understand a lot less about Dolphin communication vs Dog communication.