OP- I'm glad your pup's going to be okay!
andman, those are some cute pooches!
When our Cav King Charles was 8 months old he was sick all day barfing, eating grass diarrhea like you couldn't believe. When his ass bust loose with blood we took him straight to Animerge (our 24 hour clinic)
We got there, they went all out to scare us into giving them carte blanche for all kinds of tests, basically wanted a blank credit card with no limit.
I told them to "stop at $2000 because that's what he cost and I'll get another healthier dog". I didn't really feel that way but they really pissed me off. The look on their faces was worth it. I think they wrote "monster" in my chart
Our bill was $1899 for them to rehydrate him and diagnose him as having HGE (delicate eco system). He had 2 more bouts of HGE in the next 3 years but our vet was open and it was under $150!