A dog
Your mother.
A dog's bark is sometimes written as "woof" or "woof woof" (another typical written form is bow wow).
Humans...
A dog that just ate a watch or bomb
You do.
woof & meow
woof woofff
Well, generally a kitty goes "mew", while a dog goes "woof". So yes. A goat goes maa.
woof woof woof
Woof normally means a dog barking. e.g "Woof, Woof!" The dog barked.
Go dawgs, sic'em woof woof woof!
Woof-Woof was a werewolf