How do you defeat talbot?

Electric/Fighting type moves

A Talbot is an extinct snow-white hunting dog, so large and skilled (by way of its keen sense of smell), that it was rumoured to be able to bring down a horse in wintertime.

depends on what you are trying to defeat

Nobody, all you do now is do missions and get new friends

psycic Pokemon are weak against ghost type moves bug type moves and dark type moves, you can use ghost, dark and bug moves to deal quite alot of damage