Yep I'm sure. xD IIRC, they were only found in the Dark Cave, though... and were REALLY rare unless there is a swarm or something. :P
Silver was my first Pokemon and video game EVER so I'm definitely excited for it!~ ^_^ Mareep is one of my favorites so I can't wait to use it before the Elite Four. Hopefully Nintendo gives new moves to our GSC favorites. They are so neglected!
Oh, and add me on Smogon! xDDD