Henry started doing this thing where we'll be playing fetch, and when
he's in the process of bringing his toy back, he'll suddenly drop it and
start furiously sniffing the carpet all over.  Almost like he's on a
trail of something, but it's all over the place.  He's so focused on his
sniffing, then after a while stops and goes wandering around like
normal.  We're not sure if he's looking for food or something, but it's
just kinda weird.  Anyone else's corgi do this?