I have come to the conclusion from previous posts that my Sulcata, Spike, needs to be outside much more than he is. I am going to Menards later to see what I can come up with to make him a pen. I have a huge fenced in back yard. I would like to be able to take him out of his pen, and let run freely in the back yard from time to time, not unsupervised of corse. My concern is we have 4 dogs. I have read many instances mixing dogs and tortoises ending in a tragic blood bath and have no intentions of puting them in the backyard together. My concern is that with 4 dogs, there is obviously a lot of dog poo that gets deposited in the back yard, it gets cleaned up regularly but in the chance that a "landmine" gets missed and Spike comes across it, are there any health concerns for him?