A cupcake (also British English: fairy cake; Hiberno-English: bun; Australian English: fairy cake or patty cake) is a small cake designed to serve one person, which may be baked in a small thin paper or aluminum cup.
As with larger cakes, icing and other cake decorations such as fruit and candy may be applied. (source)
Can guinea pigs eat cupcakes?
Unfortunately, they are too sweet for guinea pigs to eat and should be avoided as a food for them. There are so many better foods available for them than cupcakes.
For more foods that guinea pigs can and can’t eat, check out our guinea pig food list