I, along with many others, have more than likely considered giving their hamsters a juicy piece of orange as a treat. Luckily I checked if they could have it on the internet first! Apprently, citrus in any form is toxic to our little friends :(. That means lemon, lime, orange and more are compeletely out the window when it comes to treats.
Although that rules a lot of treats out, there are still many MANY treats out there for our beloved pets (see noms for more treats) and I love to spoil mine so they get plenty ;).