In a recent episode of Natural World, they showcased prairie dog calls. These rodents seem to not only have different calls for predators, but adjectives for those predators as well. The difference between a snake, and a particularly large snake for example.
I can't tell much difference between the calls, but the prairie dogs obviously can, and so can this guy apparently. Prairie dogs are very social animals who live in fairly large groups, so it makes sense they would have a sophisticated language.
If you have access to BBC I definitely recommend this show in general, but at least watch this particular episode. It's pretty interesting. Plus prairie dogs are so cute :)
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