Seriously?
Because...animals don't have a language?
Universal cat translator: meow meow meow
= fuck you fuck you fuck you
Dog: woof woof woof
snausages snausages snausages
Honestly this is one time I prefer Stargate's explanation: the galaxy speaks English because this is a TV show so deal with it
The universal translator is a poor plot device when used, and is at its best when circumvented (Darmok in TNG).
Darmok didn't circumvent it at all. It just pointed out how stupid it is.
And how stupid an episode Darmok is.
If everyone communicates in metaphor and can understand NOTHING else, HOW DID THEY LEARN THE DAMN STORIES THAT THE METAPHORS REFERENCE?!![]()