chocolate, grapes- That is the first answer someone gave. I don't think those are actually undigestible, but they are poisonous to dogs. Among other POISONS are garlic and xylitol. As for undigestible, dogs cannot digest rawhide, and I'm 99% sure they can't digest bones.
No, it's keratin, mammals cannot digest it.
No, dogs do not digest peanuts.
No but some dogs can eat chocolate and digest it.
yes they are because dogs can't digest it.
yes its very good for ill dogs.
Chocolate damages the stomach, which can not digest sugar. Actually sugar is not the culprit a chemical called theobromine is, dogs can digest sugar.
Yes they can its hard for dogs to digest them some can`t digest them,so buy them pig ears these are easily digested and you can find them with other dog treats.
dogs can't eat chocolate period it has chemical acids that tears up the dogs stomache
The point is to digest things
enzymes break down food
Sure - dogs like chicken, and it's easy to digest - it's for babies.
Dogs eat grass to help digest their food.