Does medicine make my dog attractive to other dogs?
(Q) I have a black Labrador called Duggie, who is nine years old. He was neutered six years ago. About four years ago, he put on weight and the fur on his nose, tail, and sides fell out. He was diagnosed with an underactive thyroid.
Since then, he has been on 0.8mg of Soloxine every day. In the last few months, I have noticed that other dogs increasingly want to lick him underneath and mount him.
He is very submissive and doesn't really tell them off; it is spoiling our walks, as they make a beeline for him. Could there be a connection between his medication and this problem?
(A) Vet Roberta Baxter says: I'm not sure whether Duggie's attractiveness to other dogs relates to his thyroid disorder. It is uncommon for dogs to have problems of this nature, but it can relate to changing hormone levels, anal sac disorders, or even skin infections.
Dogs that have an underactive thyroid gland are often particularly submissive. Your dog's issues might indicate that his level of medication is too low.
It might be worth checking his thyroid levels to see if his dose of Soloxine needs adjusting. It would also be worth your vet giving him a general check over to make sure his anal sacs are OK, and that there are no signs of any other health problems.