[Paxtin]

TFA was good at the fan nods. But they were also usually qucik little things. I think giving a established character a fan nod as a pet would drag it out too much to be a gag. (And Sary's robot dog Sparkplug doesn't count, for obvious reasons.)

A better way to do it as a gag would be something like a random person who's dog attacks one of the turtles while out walking, and they go: "No, bad Razar! You leave them odd looking green kids alone."