Yes it get fat! Fgvtgvyhnujimkk
because hes just a big fat stupid gerbil and nobody likes gerbils.
Either your gerbil is pregnant, or they have eaten too many sunflower seeds in one sitting. Try removing sunflower seeds from their diet. If they are still fat after one week, then your gerbil is probably expecting. For info on how to take care of baby gerbils, ask on this site 'How do you take care of baby gerbils?'.
Peanuts are safe, but can make them fat. They are like treats, but I don't know about other nuts.
Other gerbils.
Gerbils are an animal and can not be "invented".
Male gerbils can be neutered, but it is not recomended. Female gerbils should not be spayed. In general male gerbils should not be neutered unless there is a good reason for it.
no gerbils are not originally from the UK but instead from the deserts of Asia. But you can still buy gerbils in the UK
Yes, mice are smaller than gerbils, but I think gerbils are the right size.
Yes, gerbils can eat mealworms as an occasional treat. Mealworms are a good source of protein for gerbils but should not be a regular part of their diet as they are high in fat. Make sure the mealworms are fresh and properly sourced to avoid any potential risks.
Yes, e.g Mongolian Gerbils.
They do have seizures (this is common in young gerbils)