There are over 900 species of tarantula, ranging in size from 1-inch to a foot long! The exact diet changes depending on the particular tarantula, but in general they consume all sorts of large arthropods (insects): grasshoppers, centipedes, and, to answer your question, other smaller spiders. The largest tarantulas even ambush and eat vertebrates like lizards and mice.

Other varieties of spider are a large part of tarantulas’ diet. Tarantulas typically lie in wait for other spiders to come by, and then ambush them using their powerful chelicerae, or the pincers by their mouth.

Tarantulas can eat smaller spiders. Prey can include: lizards, snakes, bats, toads, frogs, rats, mice, cicadas, crickets, grasshoppers, sow bugs, caterpillars, beetles, meal worms, cockroaches, and other types of spiders. Generally the size of prey is not larger than the tarantula's abdomen. Wild tarantulas will eat whatever passes their burrow or nest. However, pet tarantulas are typically not fed other spiders, or any other wild organisms, due to the risk of parasites diseases, and pesticides.

Yes! Tarantulas eat smaller spiders. Also insects and small vertebrates, according to the info I have.

They can, but tarantulas also eat bigger things like mice and whatnot. There are South American rainforest tarantulas that occasionally eat hummingbirds.

Tarantulas are very adept hunters that have evolved to eat a wide variety of prey. Tarantulas are carnivores, so they exclusively eat animals but their diet may surprise you. As you guessed, tarantulas often smaller spiders, but they also eat insects like crickets, grasshoppers, caterpillars and beetles. But tarantulas do not exclusively eat animals that are smaller than they are. Some of their larger prey include lizards, snakes, bats, toads, frogs, and even some rodents. Aren’t they amazing hunters? Thanks for the question!