Had one just like it last year. It started like that and didn't break out like most abscesses. We had felt it would break out by itself. It expanded along the right side between the ribs and skin. We lanced it and we got two gallons of green pus out of it. Gave it Draxin and a fuso Guard shot. If I ever see one like that again I will lance it and drain it.
Got it drained this morning using an 18ga needle. it was mostly fluid and a little
blood mixed in. I spoke with the vet and he thought it was prob. caused when she tried to get through the fence (dogs .. we lost one and several others hurt) . he thought the
hyde tore inside and caused a fluid build. He called it some technical name i can't remember. But we went ahead and gave her antibiotics. I'll try and update in a few days.
Watch the dex. with pregnant does can cause to abort! Jeremiah lite just went on who you are. I'm a little slow in my older years. Hope all is well down in Florida. Promise I'll do better! ZZ