Now that's cute!
I think it's proof that aliens exist. They have taken over the babies' bodies, are speaking their secret language and plotting on how to take over the world. "DESTROY ALL HUMANS!"
Oh my gosh that's adorable! Cats don't usually meow at each other I don't think, only at other species? I could be wrong but I'm pretty sure I've never heard a cat meow at another cat. People, dogs, rabbits, rats, sure, but not at each other.