Why is my dog in pain, not eating, and aggressive after a bite?

The pain is an issue but the most important issue at the moment is the infection he has developed, you must take him to the vet ASAP, he will need a course of antibiotics and pain killers (you can't use human pain killers for dogs).

I am definitely concerned about Huerra's bite wounds. The wounds on her leg look deep, and I always recommend flushing and exploring bite wounds under sedation since often there is even more damage under the surface. I would recommend seeing an emergency veterinarian. They would be able to prescribe pain medication and antibiotics to prevent infection as well.

Oh no, poor Tiger! He does need to see a vet immediately, and I would try sliding a long sheet under him. You can use this as a sling to lift him up and carry him out to the car. Have someone hold his head very carefully as you slide this sheet under him so he doesn't bite you. Carry him out to the car as carefully as possible, and get him into a vet immediately. Please take him into an ER vet clinic; if there isn't one in your area, there will be a vet on call for emergencies. The information to reach that vet is found on a clinic's answering machine or website.

It can definitely be the cause, a bite wound can be very painful and tend to get infected very fast, which can cause swelling and more pain. he will need to get it checked by a vet and will probably need antibiotics and pain killers.

Pain can cause aggression in dogs (and people!). He is obviously in pain and I strongly recommend you take him to a veterinarian for an exam. The vet will put a muzzle on him so he can examine him. Your dog will need at least pain medicine. So please take your little shark to the vet tomorrow. It may be easier to just close his crate and take him in the crate, so you do not have to make him walk.

You must take him to the vet urgently, dog bites always get infected and that is probably why he is showing those symptoms. it is also very painful and he will probably need pain killers as well as an antibiotic course in order to fight the infection.

Cub is such a cutie! I'm sorry to hear he is not feeling himself. If he is crying and has a poor appetite, I worry that he is in pain somewhere. His behavior toward your other dog may be his way of showing stress. I would definitely recommend that he be assessed by your family vet soon. I hope this helps, and your little pooch is feeling better soon!