I have noticed for the last week or two that one of my 6 month olds is either lethargic or really lazy. He doesn't appear to have anything wrong but it seems like he is always laying down. Its been about 1 month since I wormed them, using ivermectin topically. He looks to be in good condition, but this just doesn't seem right and I don't want to lose him. Should I worm him again, using safeguard? I don't know what else to do. Any suggestions would be appreciated. They free range during the day and he runs around with everybody else but it seems like if the others are standing around, he's laying down.