That horrifying, red, slimy, foul-smelling thing you found in your yard is not an animal, not a parasite, and definitely not something extraterrestrial. It’s a fungus — specifically a type of stinkhorn mushroom, most commonly known as the stinkhorn fungus in its “egg” or emerging stage.

At first glance, stinkhorns look absolutely disturbing. Before they fully grow, they appear as translucent, gelatinous sacs sitting on the ground, often with reddish or pinkish tissue inside. As they begin to break open, the inner structure pushes outward, creating that “turned inside out” look that makes people think of organs, larvae, or rotting flesh. The texture is slimy, rubbery, and unsettling — exactly like what you described.

The smell is the biggest giveaway. Stinkhorn fungi release a powerful odor similar to rotting meat, sewage, or decay. That metallic, sickening scent exists for one reason: to attract flies. The slime contains spores, and flies land on it, walk through it, and then spread the spores elsewhere. Nature’s version of biological delivery — disgusting but effective.

These fungi often appear suddenly overnight, especially after rain or warm, humid weather. They love mulch, damp soil, flowerbeds, and areas rich in organic material. That’s why so many people discover them while watering plants or checking their gardens in the morning, completely unprepared for the shock.

The important part: it’s harmless. Stinkhorn fungi do not bite, sting, infect humans, or spread disease. They are not toxic to touch, though you should avoid handling them bare-handed because of bacteria and the smell. They also don’t indicate a dead animal nearby, even though the odor strongly suggests it.

If you want it gone, you can remove it with gloves, place it in a sealed bag, and throw it away. Removing it early, before it fully matures, can prevent more from appearing because it stops spore spread. Cleaning the area and reducing excess mulch can also help.

So while your brain understandably jumped to worst-case scenarios, what you encountered was simply one of nature’s most grotesque tricks: a stinkhorn mushroom doing exactly what it evolved to do — look terrifying and smell like death.