So many different people, presumably people who have never met each other in any form, seem to have independently arrived at going "Mmm?" at their cats to chat with them. Not quite meowing back, but also not quite actual words.
I'm sure there's an entire sub-field of human linguistics around pet-talk. It's fascinating, like an inter-species pidgin language.
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In this video, for example, while "Wanna cookie?" definitely gets Minnie's attention, in some instances she only gets up or meows back when her person goes "Huh?" for emphasis.
