Awasome Can Cows Eat Ferns Ideas. If cows and horses eat a lot of bracken, over a period of time the cumulative effects of the toxins can be lethal. They consume the meat, bones and other parts of the animal and they leave behind a lot of bones and other parts which can be eaten by other animals.
See answer (1) best answer. Weakening, collapse and death (usually. Cattle and goats poisoned by buttercups produce bitter milk and a reddish color.