as i recall you can only find zubat in altering cave but after you do some certain event then you can find other Pokemon like teddiursa
Altering cave is on 5 or 6 island.
There are no moveable rocks in Altering Cave.
It's normally no pokémons in the altering cave i heard that you must do something ;)
Catch zubat but that's it.
Only zubats =)
You can catch a Houndour in the Altering Cave in Pokemon FireRed.
you use a ultra ball
it's on one of the three islands
Catch some zubat :P.
try going to Altering Cave. sometimes there are Houndour there.
you can get hound[or in altering caVE AND EVOLVE IT
Through Min Settings in mystery Gift