You remind me of the Siberian hunting spider, which adopts a highly convincing limp in three of its eight legs in order to attract its main prey, the so-called Samaritan squirrel, which takes pity on the spider, and then the spider jumps on it and injects the paralyzing venom, while the squirrel remains bafflingly philosophical about the whole thing. Not to be confused with the Ukrainian hunting spider, which actually has got a limp and is, as such, completely harmless, and a little bit bitter about the whole thing.