Triple science is great because it will help you to get into university
you should definitely take her to the vet. If she has a hole in her stomach it could possibly be a tumour. Take her to the vet really quickly. Better safe than sorry.
Now... I dont want to scare you, but it could be a tumor. What I would do is take your rat to your local vet and have the vet look over the rat and the lump.
You should take it to a vet!
Start digging a hole. Or, if you don't want your precious pet to die, take it to the vet.
Take it to the Vet ASAP! Take it to the Vet ASAP!
If you think it is blind you probably should take it to a vet
Take it to a vet?
You should probably take it to the vet, but thats just me.
You should always take your pets to the vet if they are sick or if they need their shots, and take puppies for "well puppy" checkups
Take her back to the vet
Take it to the vet.
take it to the vet