So I was cleaning up the backyard of last night's puppy playdate and I made two very annoying discoveries. The first is that Tiburon intoduced Kaser to his new fun and exciting activity of shredding up the foam padding for the carpet we are throwing away as we are replacing it with wooden floors. The back yard was littered with bits of foam padding everywhere. 
After cleaning the worst of it up, I then made my second discovery while doing the rounds with the pooper scooper. One of the puppies, (most likely Tiburon) seems to have gotten into something they shouldn't have which resulted in hard plasticy crap in their poo. Not certain what it was but there was green yellow and orangy bits in the  poo and it was all broken up so it was hard to make out what it might have been. Tiburon has been off his feed a little bit the last few days on in that he hasn't been as gungho about eating everything in 30 seconds flat, hence my thinking that it was most likely him with the upset bowels (as well as the poop being smaller than what I've seen Kaser produce).
Either way I informed our friend of the potential plastic in poo and am watching Tiburon just in case. He appears to be fine, running around and wanting to play like a nut as usual but seems to be keeping up his practice of eating his food at a slightly more sedate pace. Regardless I am now watching him closely. Thus far, the two times I have seen him poop today, he has been going like normal, so maybe the danger might have passed.
I just wish I knew what it was that had been eaten so that I could know who did the devouring. It really didn't look like anything Tiburon might have access too, but then he has been digging in the yard and chewing on lots of random stuff lately. 

He really is living up to his name. I am kind of glad we didn't name him Loki.