Hi Hope this message finds you in good health. I have gone through your complaints and understand your concern. Generally the severity of the symptoms depends on the wound size,how extensive is the wound or how deep the dogs canines might have pierced. The area in which u have been bitten has tiny nerves around that are responsible for sensations being intact. If during the bite,any of these nerves has been damaged, it causes numbness,as if the part isnt there. These are normal findings in such cases. what we do at our clinic is do proper clening of the wound,apply cream and start on antibiotic tablets. if the numbness is severe,get a ncv study done and start on pregaba tablets.. eventually after 2 -3 weeks,the nerves start healing on their own and the numbness subsides completely. only in rare cases,the numbness remains. Nothing to worry about.Do get back to me after ur mri reports are ready. I hope your question has been answered. If you have any follow-up queries,feel free to consult me anytime. Thanks,Take care,God bless.