Never used zapper before

I am thinking of getting a new pet and zap it will the zapper only zap the pet you want to be zapped or will it hit any other pet or their Minions

You can choose the pet you want to zap only so it won't hit your other pets and the minion of the pet you want to zap has a chance getting hit.

Thanks was not going to give the pet a minion yet

You're welcome and good luck with the zapper!