Over the past couple of weeks, Chloe has developed an obsession with the furnace vents on our main floor. She will stand attentively at a vent, particularly the ones in the kitchen and living room, and just sniff and stare at it, ears perked. I am not sure what has grabbed her attention, but it keeps her busy for long periods of time. Perhaps she smells or hears a mouse? We haven’t found any signs of mice being in the house though (thankfully).