You can breed a Castform with a Ditto, that's for sure.
you can migrate it from ruby or sapphire that's what i did
If you breed with a list of Pokemon (which includes Muk) then you can get a baby castform.
you have to migrate it from Pokemon ruby sapphire or emerald but then you can breed it with ditto and get as many as you want if you have not beat the game try aaction replay code for 999 rare candys sorry hoped i helped if you want ill trade you a level 100 castform
Castform is a Normal type pokemon.
A very low chance like 1 in 100
Castform does not learn Thunder as it levels up. Thunder is a TM that you can teach it. (In Pokemon Emerald, Ruby, or Saphire, you can get Thunder in the Lilycove Department Store.)
breed them at the day care
Psyduck can breed with psyduck, I think
Yes, you can breed any Pokemon on any of the Pokemon games, except the legendary Pokemon.
if it has a gender, breed it with a ditto then you will get a castform egg. If no gender, you can't breed it at all and don't even try because it won't work.
castform hasn't evolution!