 and they start walking in circles counterclockwise. If you see animals doing dumb stuff, deer can catch it too, but actually deer spread it. But mostly the bigger deer family, like the elk and moose, get the worm from eating their feces in the grass. And that's what happens to goats too, because the pasture gets low when it's dry, and you eat the grass too low, and then your goats and your sheep, you have to make sure you take your medicines.