Most communication is based on the context of our society. I bet we wouldn’t understand the context of Dolphins for example.

Better communicate with intention. When you make good intentions clear, have patients, move slow, etc, then you can attempt communication with many animals already.

I can communicate with my cat, and I understand perfectly when she wants dinner. I can signal her that she needs to wait for a little while. I can understand her frustration when the neighbor cat visits our garden. I can see in the neighbor’s cat’s eyes he just want to chill here because of his enthusiastic dog housemate. I still have to figure out what that blue-tit wants from me. I left him some fresh water, see where that goes. It could be it just tries to tell me it’s a bit busy in the backyard…