Dogs bark but what do kittens and puppies do?
Kittens and puppies may make the same sounds as adults to some extent - just as adults may make less mature sounds.
Cats: Meow, purr, cry, mewl, hiss.
Dogs: Bark, yap, yip, whimper, whine, groan, growl.
"Bark", "yap", and "yip" are really the same vocalization - smaller breeds and puppies just can't manage as low of a "bark" as larger dogs.