Microsporum canis is a type of fungus that commonly causes skin infections in animals and humans. It is primarily known for affecting pets, especially cats and dogs, leading to a condition called ringworm. The fungus thrives in warm, moist environments and can spread through direct contact with infected animals or contaminated surfaces. In humans, Microsporum canis can lead to symptoms such as red, itchy patches on the skin, often in a circular shape. Treatment typically involves antifungal medications, either topical or oral, to eliminate the infection. Good hygiene and regular grooming of pets can help prevent its spread.