Bugsy can smell all sorts of stuff which is why when he starts pawing at a drawer or pointing at a wall I get very concerned LOL
Last week first thing in the morning we were going down the stairs (he is a big wiggle butt in the morning so he was all excited and wiggling and wagging and he has 2 rubber bones he carries) and suddenly his motion stopped - completely - and with his rubber bones still in his mouth his head whipped to the side and he did this big sniff. then he went all wiggly again.
I'm like uh oh something's in the corner but it isn't alive - so put lights on and it was a dead bumblebee. He picked up its scent while we were coming down the stairs.
If it were alive he would have dropped the bones and his tail would have been going like a switch and he would have been after it - been there done that with palmetto bugs (huge roach like things), lizards, spiders, ants, etc.