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"I went ahead and did the flea morph. They're gross, mostly blind, bloodsucking, brainless little things, but have you ever tried to kill one? You could swat it all day and it would just laugh."

The flea is an immensely minuscule creature, native to Earth, used by the Animorphs for mainly reconnaissance or infiltration purposes.


"I squeezed the flea carefully between my fingers. I focused on the flea. Yes! It might just work. We had very few animals that small on my own world. Perhaps the same was true of the Yeerks. The Visser would not expect me to morph something so tiny. In which case, I might have one slim chance. I had morphed a fly. And I had morphed an ant. But as small as they were, they were not small enough. An ant is far larger than a flea. Many times larger. But a flea is nearly invisible. It was time to get very small."

The flea was first acquired by Jake in The Visitor, after Rachel makes a flippant remark about morphing fleas to keep an eye on her. Cassie acquires and morphs a flea in The Capture, and Ax acquires one in The Andalite's Gift; after Ax is kidnapped by the Veleek and kept captive on Visser Three's Blade ship, he locates a flea on his body and morphs it to escape, recalling how Jake was able to morph the tiny creature as well. In The Threat, Rachel, Tobias, Marco and David acquire fleas as well.


"A flea can't see much really, just an impression of light or dark. Not my favorite morph. But if you want to hide out, unnoticed, on a human body, you can't beat the flea. And with practice you can learn to understand speech from the distant, distorted vibrations that reach your quivering antennae."

To be added


Known Morphers