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Can you be a bit more specific? The question in general is extremely vague. There are New Worlds that burrow just like there are Old Worlds that burrow. There are New Worlds that are arboreal just like there are Old Worlds that are arboreal. Whether a tarantula burrows or not has nothing to do with it being Old World or New World. It would help a lot if you told us what species you are keeping so we can better help you.Edit: Nvm just saw on the first page that you did say which species. To be honest, that probably should've been included in the first post tho The species in question are fossforial but are also heavy webbers usually. If provided with enough substrate they will usually burrow, but some will just create silk-tubes to hide in.
Can you be a bit more specific? The question in general is extremely vague. There are New Worlds that burrow just like there are Old Worlds that burrow. There are New Worlds that are arboreal just like there are Old Worlds that are arboreal. Whether a tarantula burrows or not has nothing to do with it being Old World or New World. It would help a lot if you told us what species you are keeping so we can better help you.
Edit: Nvm just saw on the first page that you did say which species. To be honest, that probably should've been included in the first post tho The species in question are fossforial but are also heavy webbers usually. If provided with enough substrate they will usually burrow, but some will just create silk-tubes to hide in.