Fodder, a type of animal feed, is any agricultural foodstuff used specifically to feed domesticated livestock, such as cattle, rabbits, sheep, horses, chickens and pigs.
“Fodder” refers particularly to food given to the animals (including plants cut and carried to them), rather than that which they forage for themselves (called forage).
Fodder is also called provender and includes hay, straw, silage, compressed and pelleted feeds, oils and mixed rations, and sprouted grains and legumes (such as bean sprouts, fresh malt, or spent malt).
Most animal feed is from plants, but some manufacturers add ingredients to processed feeds that are of animal origin. (source)
Can guinea pigs eat fodder?
Yes they can but don’t give them too much of it to eat.
For more foods that guinea pigs can and can’t eat, check out our guinea pig food list