> pets can communicate complex language

Who was even trying to push this narrative in the first place?

the first comment: "complex constructions and grammar"

Cats don't talk in complex ways to owners. Listen to what a male cat vocalizing while trying to woo a female cat. They have something to say and a means to say it. They don't need that kind of communication for reminding the food dispenser what time it is.

That's exactly my thought, it is no different than teaching my dog a trick for treats