Swans have fine, white lush feathers. They groom their feathers constantly to keep themselves coated with oil. This keeps water from wetting their feathers and lets the swans float. Goats are vegetarians, they eat grass and leaves but they may also eat paper. When a goat smells paper it eats it and there is nothing strange about it because paper is made from pulp, which is vegetable fibre.
Goats have strong digestive systems so they can digest paper easily.
But the printer s ink and probably other chemicals present in the printed-paper may cause trouble. Animals are more hygienic than human beings. They have a strong sense of personal hygiene. You must have seen monkeys cleaning each others backs, animals trying to clean themselves with the swing of their tails, animals licking each other clean and so on. They have their own instincts and rituals.