Don't know if this is close enough but one of my pup owners in Portland has used Rock Creek / Dr Pemberton in Hillsboro for years. Anne

I used Aloha Dog and Cat Hospital for 9 years until I had to let my guy go. I was very happy with them. The only time I used an ER vet, I went to Dove Lewis. I had a positive experience with them. I've heard good things about NWVS Emergency Services, but they are in Clackamas. A friend of mine uses Frontier Veterinary Hospital in Hillsboro, she's happy with them. All of these aren't exactly close to Tualatin, though.