The Ravagers (Various Transformations)

The Ravagers was a short-lived DC comic that featured Beast Boy, formerly a member of the Teen Titans. He can transform into any animal, but his transformations are usually too quick to bother with. A few exceptions are found here.
In Issue #0 we're treated to Beast Boy's revised origin story, which involves him being experimented on while wearing a speedo:

As you can see, the results leave him hairy even as a human. I approve!

Later he's in a gladiator ring and morphs into a tiger:

He morphs back naked, which is the only reason why I've included this pic:

In issue 03 he morphs into a wolf and back:

Then he has some fun as a lizard and an ape:

Finally, a nice splash page from issue 04. I like the easily-torn uniform...

The rest of the series was a disappointment. No discussion of Beast Boy is complete without mention of his finest transformation, which occurred in the Teen Titans cartoon. In the episode "The Beast Within" he turns into a big ape-werewolf monster--witness his first and second transformations, courtesy of Shadowlord Inc.