Speaking of heartworm, now that the weather is getting warmer, it is time to start thinking about giving it to them again if you do not give it year-round. If you do not give it every month, they will have to go to the vet to get a blood test to make sure they are heartworm negative. Otherwise, 1 chewable a month will keep them safe. My trouble is that the dosages are by weight. The Heartgard is for one weight group, but the Frontline weight parameters are different. So, I am going to post the products, weight parameters, and pictures of the packaging so you will know what to buy online, or in the stores. I also notice the warehouse clubs like BJ’s and Costco are selling multipacks in the pets section. Excellent. So, this is the Heartguard for smaller cockers, under 25 pounds, which many American cocker spaniels will be, especially if they are female. Prevent Heartworm Control Roundworm Hookworm in Dogs 0-25 lbs 0-11 kg 6 Chewables is a 6 month supply for your dog. Think BLUE for baby package to remember which one to buy if your dog is under 25 pounds. http://www.amazon.com/gp/