Identifying a spider bite on your canine friend can be difficult or even impossible even for your veterinary clinic Floyds Knob, IN staff.  Even so, if your dog has an unidentifiable bite that isn’t healing, give your vet a call and schedule a visit. Your vet may not be able to identify the bite, but he can determine how to treat the bite and diagnose whether it’s a serious bite or not. If it’s a black widow spider bite then your dog may have symptoms such as muscle tremors, cramping, abdominal rigidity, severe pain in the back, chest or abdomen, respiratory problems, increased blood pressure, vomiting, diarrhea, etc. Some dogs may show no symptoms at all while younger or older dogs are at a higher risk. Treatment includes hospitalization for supportive care, anti-venom drugs, and monitoring. Side effects from the poisonous bite could last for several months.