My 2 year old lab had a tumor on her splene..
I know its different cause she's younger but ALWAYS have insurance cost us over £700 to get removed and after treatment

I know its a cat but my cat has a tumor and she's 16.. she cant have it removed but she has medicine for arthretas to stop it from growing..no one knows how it does it but it does!!

may not be the same for dogs though?