I seem to recall last year when I went to the vet, (back when Ernie had worms for the first time) that he could have contracted them a number of ways, including by bringing them in from the outside, or from eating his own feces. Then I also remember her telling me that it was nothing big to worry about, because most tortoises lived their lives with worms and had no problems, but that I should clear them up anyways to be safe. Now it's coming time for his vet check up again, and I happened to notice pinworms again. Should I be worried that they've surfaced again? It is true that they can live with them, as long as their numbers don't get out of hand, and still be considered healthy? Of course I'm going to get them taken care of, I'm just curious.