My fiance and i filled the tub up to about a few inches away from overflowing yesterday. (for those of you who dont know, my dog toby has this obsession with the bath tub, he LOVES baths he wants one every day).... he wouldnt get out so we filled it up all the way and watched him wade around (it was just deep enough to cover his back... so his head wasnt submerged
) he had lots of fun