Years ago, I took in a stray that tested pos for heartworm. He was treated with an arsenic based drug, which in itself is dangerous. Once treated, he had to stay "calm" for 30 days to prevent the dead worms from dislodging and going to the heart. After treatment, my dog lived to be 18 years old! If it were me, I would certainly get the yorkie treatment and give it another chance at life! Good luck to you. |