Skitty does not appear in Rusturf Tunnel. Only Whismur are there.
On Pokemon Sapphire, you can find a skitty on route 116, near the Rusturf Tunnel, but it's very hard to find. You have about a 2% chance of finding one!
You can get a Shiny Skitty in a 1 in 1800 chance that a shiny Pokemon will appear, let alone the odds of having a Skitty Swarm appear on route 116.
Evolve a Skitty using Moon Stone. Skitty can be caught outside Rusturf Tunnel on Route 105 and Moon Stones can be traded over or found in Meteor Falls.
catch a skitty at the gras between rustbory city and the rusturf tunnel if you got it let it evolve using a moonj stone
Catch it in route 116
Use a pokemon who knows tackle, they are found around Fall City. Skitty will appear :)
Skitty is a Normal type pokemon.
You find it in route 116. P.S.:didn't you look in your pokedex?!
You can catch a Skitty in Pokemon Pearl by completing the game and getting a National Dex. When you have the National Dex, talk to the little girl in Sandgem Town. Everyday, a different Pokemon appears in the Sinnoh region. Skitty will appear on a random day.
You can get skitty in route 116
Skitty evolves into Delcatty though the use of a moon stone.
A skitty is a Pokemon that looks like a cat.