Lovely puppy, and don't they get on well together! You can now buy silicone pads which adhere to the side of the bathtub. The pad has recessed sections which the owner smears with peanut butter to keep the dog steady in the tub. I haven't used one myself, but they are proving popular in my breed. It is also worth mentioning that many peanut butters use xylitol as a sweetener. As xylitol is toxic for dogs, it is important to check the ingredient label.
Yes ive seen that product as well we are definitely going to look into getting it. and ive also heard that recently about peanut butter sad that they now add that ingredient