Can cat bites harm pregnant women?

Cat urine is not harmful to pregnant women or their unborn children. That is an old wives' tale. Cat urine contains ammonia, which means the fumes can be overpowering in a dirty litter box, but it will not harm you or your unborn child. The fact that it smells awful doesn't mean it'll hurt you.

Cat feces can carry a disease called toxoplasmosis, which can be harmful to pregnant women and their unborn babies. However, toxoplasmosis is a disease that only affects outdoor cats. If your cat is an indoors-only cat, you do not need to worry about toxoplasmosis.

Certain kinds of litters (specifically, the clay-based kind) contain toxins which are potentially harmful to humans. This is really only a problem when you pour the new litter in the box, or dig around in the box vigorously, as this releases a cloud of clay dust.

Instead of clay litter, try the crystal kind, such as Clear Choice Crystals or Fresh Magic. You can also try a corn-based litter like World's Best Cat Litter, but in my experience, the crystal litter is far superior. It lasts much longer, it controls odor better than any other litter, and there are no urine clumps to scoop. Instead, the urine is absorbed by the crystals, so you only have to scoop the poop. It also tracks much less (meaning, far less of it gets kicked out of the box onto the floor).