Dugan can't hear me call him back when we're on a walk, but can wake up from a sound sleep and come waltzing in, when I, very quietly, peel a banana three rooms away from him!!!
He knows when I'm low or not feeling well, and stays with me, until a banana is unpeeled!
He disappears when I'd like to give him a shower, (a very rare occurrence), no matter how I try to trick him. He's very fast for a 12 year old.
There are lots more, but I ask him how he does those things, and I either get a stare, wet tongue, back to sleep or "Where is the banana?" look.