Digital art of a tall muscular Anthro spider dressed in skimpy cloth and carrying a throwing spear and a knife made of bone. She is carrying a short twink frog on one of her six arms, cheerily declaring "You are my pet now. This is happening." The frog is sweating not in fear, but in embarrassment -- "so many confusing feelings...", he thinks to himself.

⚠ Arachnophobia warning: IRL photo of tarantula; click arrow to reveal

irl photo of a giant tarantula and a tiny itty bitty frog

Crocraft & Hambler (1989) noted that the frog seemed to benefit from living in proximity to the spider by eating the small invertebrates that were attracted to prey remains left by the spider. The frog presumably also benefits by receiving protection: small frogs like this are preyed on by snakes and large arthropods, yet on this occasion we have a frog that receives a sort of ‘protection’ from a large, formidable spider bodyguard. Hunt (1980) suggested that the spider might gain benefit from the presence of the frog: microhylids specialise on eating ants, and ants are one of the major predators of spider eggs. By eating ants, the microhylids might help protect the spider’s eggs.

“Tiny Frogs and Giant Spiders: Best of Friends” ~Scientific American, May 16, 2015