What is this bump?

[Mkinleigh]

Does anyone know what this bump is? Did somthing bite her? She has been lethargic and won’t eat anything. She is also not moving her back legs around but when I touch the bump she winces.

 

[kinyonga]

Looks like it could be the start of a papilloma.

Can you post some photos of all of her please?
What specific supplements domyounuse and how often and how heavily for each? Please be specific as to whether the supplements contain calcium, D3, phosphorous, prEformed vitamin A.

Has she laid eggs yet? How many, if she has? Last time she laid, if she has?