Without doing an instinct test or evaluation with a knowledgeable trainer, there is no way to tell.
Instinct is incredibly random.
It can show up very strongly in pups out of show lines or it can show up weakly in pups out of two working parents. I'm certain someone would've mentioned it by now. Unfortunately, no, it really doesn't mean anything. Perhaps the dog is demonstrating some instinct in his movements around the cats et al, perhaps not. Most evaluators require the owner to sign a waiver before testing the dog.