Penny and Sampson’s mom here. Quick question…they weighed in at 47 lbs and 48 lbs last month when they saw Dr. Ahrens for their Cytopoint shots. Dr. Ahrens said Sampson looks a bit underweight. I took the recommendation you gave me for Wellness dog food and just started tapering them off the raw. I like them around 50-53 lbs they both look a bit underweight to me. I will follow the feeding guidelines and watch their weight. Do I need to go to the next weight class down for their Heartguard medication or can I still use the 50 lbs and up dosage?