UPNetwork -> Pokédex -> Generation 3 -> Breeding Groups

Monster Group

001 - Treecko - Grass

002 - Grovyle - Grass

003 - Sceptile - Grass

007 - Mudkip - Water

008 - Marshtomp - Water/Ground

009 - Swampert - Water/Ground

045 - Whismur - Normal

046 - Loudred - Normal

047 - Exploud - Normal

070 - Aron - Steel/Rock

071 - Lairon - Steel/Rock

072 - Aggron - Steel/Rock

150 - Tropius - Grass/Flying

169 - Rhyhorn - Ground/Rock

170 - Rhydon - Ground/Rock

203 - Bulbasaur - Grass/Poison

204 - Ivysaur - Grass/Poison

205 - Venusaur - Grass/Poison

206 - Charmander - Fire

207 - Charmeleon - Fire

208 - Charizard - Fire/Flying

209 - Squirtle - Water

210 - Wartortle - Water

211 - Blastoise - Water

227 - Nidoran (f) - Poison

230 - Nidoran (m) - Poison

231 - Nidorino - Poison

232 - Nidoking - Poison/Ground

255 - Slowpoke - Water/Psychic

256 - Slowbro - Water/Psychic

272 - Cubone - Ground

273 - Marowak - Ground

276 - Lickitung - Normal

279 - Kangaskhan - Normal

286 - Lapras - Water/Ice

298 - Snorlax - Normal

307 - Chikorita - Grass

308 - Bayleef - Grass

309 - Meganium - Grass

313 - Totodile - Water

314 - Croconaw - Water

315 - Feraligatr - Water

327 - Mareep - Electric

328 - Flaaffy - Electric

329 - Ampharos - Electric

344 - Slowking - Water/Psychic

381 - Larvitar - Rock/Ground

382 - Pupitar - Rock/Ground

383 - Tyranitar - Rock/Dark