a couple problems i see is 1 like you said animals. animals are drawn to water spots like that. when your not there all the forest animals are and most of them love to eat our kind of plants. 2 the dampness is actually a problem. these plants love their soil to dry out a little in between waterings to breath. if its always damp they dont get a chance to breath and can easily die. also heavy rains could flood the swamp and flood your plants out and easily killing them as well.