Everyone gets dirty and being clean is important. Dogs may not have this particular sense of hygiene (unlike cats) and rely on us to clean them up when necessary.
As a puppy Apollo was fairly tiny and his first baths were in the kitchen sink. Why? Short answer: he fit and it made rinsing him easy. As time went on we eventually graduated to the bathtub. It's funny when I think about the progression of Apollo's attitude towards baths as he's gotten older. He started out not knowing what exactly was going on and made a slight fuss - not unlike human children who tend to share those same behaviors. Once he got used to it, it became more of a routine and he accepted it with full cooperation. Him and I have gotten to the point where it is more of a chore and I'm sure we're both thinking "let's just get this over with as quickly as possible." Isn't that how we all perceive our shower routines these days?
I can't help but laugh at myself when it comes time to put dog shampoo on Apollo's back and I squeeze the soap onto his back in a zig-zag pattern. The first time I did it, it was completely unintended and when I realized I might as well have been squirting ketchup onto a hot dog, I busted out laughing like a maniac (the ironic pun of him being a wiener-dog) and snapped a picture. Apollo looked up at me with a face that embodied a few sentiments: I'm not amused, hurry up, and you suck.