Medical treatment for dog

Hello everyone, this is Rascal. The past few weeks he has been not eating and having blood in his stool. We have been in and out of the vet and already invested almost 1,400 into him. I am a full time student and work on the weekends, my wife stays home with our 9 month old.  As of right now he is at the VCA Capital Area Veterinary Emergency and Specialty Hospital in Concord NH. I dont like asking for help, but would do anything for this dog. He really is a goood loving dog and a big part of our family. The hospital wants to do some of the following. Fluids, IV fluids setup. emergency exam, hospitallization setup, hospitalization/hour level 2 k9 s, administer meds, injections, istat EC8+, internal medicine inhouse consult, ultrasound abdominal, feeding tube. If we do not present them with a deposit or any more money, they will ask us to pick him up from the hospital and bring him home without finding out what is wrong with him and not give him a fighting chance. If anyone could help we and rascal would greatly appreciate it. One of the pictures is our boy all dressed up looking good. The other picture was taken this past Saturday Feb 4th, he has lost alot of weight. Thank you for taking the time to read this short story.