Help! Help! Help!

Question:
 I have a 3.5 years old rottweiler, 167 lbs------- according to last time weighed. Yesterday morning I took him to the vet to get his teeth cleaned and toe nails trimmed. The hopital put him in anesthesia, just like they did before. Around 11 am, they called us and told us that my dog was awake, we may take him home at 1pm. but later, we got another phone call said we could take him after 4pm. So I got to the hopital around 5pm. Minutes later, the vet and one of the male nurse came in with my dog. The vet told me that my dog had a diarrhea, probably due to the stress. I asked her that any blood in his stool, she said yes, and no food today. All the time, the male nurse was presenting. I took him home. I noticed he had blood dripping from his end. I used napkin to wipe it off. He was still very sleepy. Nothing seemed abnormal to me. Until this morning, I was woken up by his crying. He cried constantly and loudly. Also, he behaves strangly, he walks on his toes, like he was afraid of something. He refused to eat, most of the time he just lying on the floor. I strongly suspect he was mistreated in the hopital. Because people in the hospital don't like my dog, and treat us differently. My dog is big and 99% of the time, he is so friendly and sweet. but honestly, my dog has snapped couple people in the past (no one is in the hospital), and the hospital staff knew it. Every time, I put muzzle on him when I go there in order to make them feel good, but they treat my dog and us coldly, I have to admit that it hurts so much. We still go to this hopistal because we go there since my dog was a puppy, and I think this vet is a good doctor, even though she treats us coldly. They treat us so obvious different, like yesterday the nurse did not even weigh my dog, just rushed us to the waiting room. (My dog is a little bit heavy, the vet told us to put him on diet last time, and I really need to know how he is doing now, but they didn't even weigh him) Now my dog is crying and it breaks my heart. I don't know why suddenly he got a serious diarrhea, he was happy and healthy when I took him there yesterday morning. I have to mention that I am Asian(my English has a accent) and my husband is white, much older than me. We may not be a traditional likeable couple, but we didn't do anything wrong deserve my dog to be treated differently. I am so upset now, I can't think. Please help me!! Please tell me it's all my imagination, they didn't mistreat my dog. Otherwise, I would feel it's my fault to get my dog suffering now. It's horrible. I just want to know, what kind of stress can make my dog get a sudden serious bloody diarrhea in several hours? I need your help!
Answer:
 You need to have this dog seen asap. Find another vet or an emergency vet & get there immediately. I don't know why you say nothing was abnormal - it all sounds abnormal to me. He should not be bleeding rectally from having his teeth cleaned. Nor should he have still be that sleepy. I'm wondering if he didn't fall off the table & have internal injuries. Let us know what you find out.
Answer:
 take him to another vet. if the vet is rude to you they dont deserve your business. i dont care if you think he is a good vet or not if the vet and everyone else is cold to you then it is not a good vet. and anyone who is going to be mean to your dog because of something they have heard and not personally experienced they are mean. find a new vet! and take your dog to see them now.