I noticed that the past few days Jake has been trying to lick his butt. Anyone know of any possible reason? FYI, we have not changed his food (and he is not licking his paws). He is currently getting over a case of kennel cough, too (not sure if that has any relevance) and has been really mellow.
That's usually the most obvious sign. Or he might just have an itchy butt, and that's his way of scratching it. If it continues, me personally would recommend having a vet check his glands out before they become impacted and infected and it causes him some major problems. (read: expensive)
Wouldn't hurt to run a stool sample either for parasites. They can make the anus itchy also.