Its the rare Venus Cat trap plant! Try subduing it with a long feather rubbing its belly and head...and it might calm down enough to come out. Otherwise get a stick, tie a long string to it and slowly wave and wiggle the string in its vicinity but don't let it catch it! Slowly keep luring it out until it's chased the string and then place a tiny cage around the pot! If that doesn't work....you're gonna need to bust out the big guns! Lay a little trail of meowijuana bits in a line all the way out of the pot and far away! 😁 then spray that planter with lavender and it won't come back(maybe).