In one level, Jasper gets frozen into a block of ice after falling through a frozen river. In reality, that would be fatal. He would not be seen alive after.
It's explained that the robotic toys capture the puppies by putting them in crates. However, they only appear to harm the main pups (not put them in crates).
In one level, Horace is crushed/squashed by a falling stone. Unless if the ground was really soft, it would be fatal, he would not speak or be seen alive after.