[HairOfTheDog]

I used to fret about lumps, taken a lot of dogs and cats in for lumps and never had one that was any more than a fatty cyst that older animals (and people) get.

Big clue... can you stick your fingers all the way under the lump without a lot of connecting tissues? and does it move freely like it is only connected to the skin? If both of those are yes, I wouldn't even say you ~need~ to spend the money for the check.

Also, has it grown significantly since you first felt it a month ago?

Bad tumors are connected firm to the muscle mass with lots of tissues and a blood supply.

[RosieCotton]

Big clue... can you stick your fingers all the way under the lump without a lot of connecting tissues? and does it move freely like it is only connected to the skin? If both of those are yes, I wouldn't even say you ~need~ to spend the money for the check.

Yes to both of these...but it has grown a lot - at first it was barely noticeable. So I'm worried. I guess it'll have to come off...but I'm hoping it's something very simple.

She IS a bit old - nine or ten. So hopefully that's the case? Or should I be worried since it's grown fairly quickly?