Scabies is a little parasite that likes to live on the skin and causes mange. Scabies is particular about its host. Human scabies is a special variety. Canine scabies may cause some little red bites if we touch infected animals or bedding. However, the animal scabies can t reproduce on humans and is short-lived.
Toxoplasmosis can cause disease in humans.
Cats with or without symptoms may shed it. Women who are first exposed during pregnancy may have babies with birth defects. Washing hands after handling litter or soil outside is a good idea. Finally, I should add that the easiest thing you can catch from a pet is love.