Yes they do
Crocodile's swallow stones so they can dive deeper. They can hold there breath for up to 1 hour depending on how old they are.
They swallow stones that aid digestion and help them swim, since they naturally float.
Many birds, including chickens, have a gizzard, and swallow small stones to help them grind up food. Crocodilians also use stones to aide in digestion.
no if you eat them you will die right after.
As the gizzard stones wear down they become small enough to pass out of the gizzard and will pass harmlessly out.
Go into the mines and the deeper floors have ores in the stones. The deeper the floor, the more rare the ore.
No. But crocs (like some birds) may swallow a few stones to help with breaking down the food into digestible pieces.. Crocs can't chew their food, they only rip lumps off and swallow.
Alligators, Crocodiles and some sharks do this Ostriches do this as well, because it helps with their digestion.
Emus will swallow quite large stones and charcoal to help them grind up and digest their food.
Yes and no. Kidney stones feel as big as a marble. But if you swallow a marble it will come out a different way
There is only one species of emu. Emus swallow stones and pebbles to help their digestion.
Hades is in the underworld and you duck from the stones falling, jump from the alligators trying to bite you, and you duck from the bats flying at you.