Not what I'd been led to believe, but I'll take your word for it
It's account for about 40-50% of my dogs diet.....
have a look at the link below and you will see that per selected serving tripe has just a meager 13.6 g of protein but a massive 95.1 g of water ... also look at the first triangle diagram and you will see it is 84% moisture .........
http://www.nutritiondata.com/facts-C00001-01c20uB.html