A blood test revealed Streptococcus canis , a bacterium rarely seen in humans. It can cause pneumonia and sepsis, among other complications. The lead author, Dr. Lederman cautioned that dog licks are harmless for most people, but the woman had a weakened immune system and cracks in her skin — especially between her toes — that allowed the bacteria to enter her body and spread.
86-year-old woman latest to get infection from being licked by a dog
Lick granuloma - Wikipedia
A lick granuloma , also known as acral lick dermatitis , is a skin disorder found most commonly in dogs , but also in cats. In dogs, it results typically from the dog's urge to lick the lower portion of one of their legs. The lesion can initially be red, swollen, irritated, and bleeding, similar to a hot spot wet eczema. The animal's incessant licking of the lesion eventually results in a thickened, firm, oval plaque , which is the granuloma.