We've had Jack Russels that would allow themselves to be given a bath, although somewhat unwillingly. We also had one that loved water, clean, stagnant or dirty, but hated anything resembling soap combined with clean water.
However a Jack Russell that runs and jumps into a bath of soapy water with two grandsons already in position is something completely different.
Mind you he sneaks into the shower too and that cold nose does makes you jump.