My fantasy spider species that will be your friend. They're as big as a medium-sized dog, with a bite only as painful as a bee sting. When people coexist with them, they are solitary creatures that will bond with humans while usually ignoring their own species, allowing people collect their sweet, edible webs. When people hunt them, they form massive colonies that attack humans on sight as a defense mechanism, collectively covering intruders with dozens to hundreds of bites until they perish.