I have a 1 1/2 year old kitty who I think has a cold. He has a slightly runny nose (I notice it's damp when he nudges me), he seems just a little off, and he woke me up sneezing (which is why I'm writing this at 4 am). He is eating and drinking normally, still bugging me for food and drinking out of his water dish, he's using his litter box appropriately, and he still has a few episodes a day of the kitty zoomies as I call them. He's a calm and quiet cat anyways so it's hard to notice a drastic change of behavior in that area. Can cats work through colds at home if there aren't any big signs, or do they always have to go to the vet with a cold? Thanks in advance!