I had several tarantulas as pets over the years when I was a kid. I just caught them outside though. One in particular I had for a few years was a total bad ass. He ate any living thing I put in his aquarium; beetles, wasps, dragon flies, spiders, scorpions, small mice, even a baby rattle snake. He did not touch caterpillars though. Maybe he knew they were full of leaves, as he wasn't a vegan pussy. Then one day I found him dead with a cricket in his fangs. I think the poor bastard choked to death.