BIG BULL X........ im not been funny mate, but can that 3/8 5/8 dog actually catch anything on the lamp because it looks a slow dog to me (with it being such a big dog...doesnt look the running type)
iv always let my dogs start running around 8months.....and found that they were all more than fine personally dont think you have 2 wait till the dog is 12months to run it....(not been funny just my personal view)
looks a bad cut that mate, my dog had a big cut on its side what a terrier did and i used tea tree oil on it, took around a month or so to heal properl but its fine now just a scar