Everyone knows whales love to roll around in fluffy smoke stacks. Now that I say that, I realize that I programmed a whale roll ability a long time ago, but didn't do that in this gif below. Oh well.
You can't tell from the gif, but when dogs fly into the flames, they take damage. And yes, I do realize that the flames and the mud and the smoke currently do not affect the enemies, but that's on my to do list. As well as a adding whale and dog medicine for smoke induced asthma. And maybe like the fire can be used when the flock goes camping and someone wants to make hot dogs or whatever.
Also, piles of dirt. Piles of dirt that splash mud on your whale so that you can use your mops more!
There's no limits on how dirty a whale can get.