The natural world is always fascinating, with millions of unique species for us to explore and research. But now and again, nature presents us with something so strange that it is, frankly, bizarre.

illustration of single-cell parasites floating through the bloodstream alongside blood cells The parasite Toxoplasma gondii hides in up to half of humans, although it rarely causes symptoms. But when ...

This parasitic worm crawls into the eyestalks of snails, takes over its brain then pulsates to make the mollusk look like a dancing caterpillar. When you purchase through links on our site, we may ...

When a parasite infects a host, it can manipulate host behavior, which may help spread the parasite to new hosts, or enable the parasite to complete its life cycle. Parasitic worms known as hairworms ...

When Chelsea Wood was a child, she would often collect Periwinkle snails on the shores of Long Island. “I used to pluck them off the rocks and put them in buckets and keep them as pets and then ...