They are two german dogs that appear in Phantom of the Garbage. They are afraid of mice. Heathcliff kicked garbage can lids into their mouth. They ran away when they saw the mouce a second time.
Qoutes:
"Yavole"-Both
"This will be a piece of schnitsil" Panzer
"Grrrrr"-Unknown
"You dunkoff, I like you but this is ridiculous"-Panzer
"Mouce!"-Otto
"Yah, it's a mouce alright. A mouce!"-Panzer
"This is the end of the line for you now"-Otto
"Yavole, he's right you know"-Panzer