We Have Enjoyed Creating This Medium Size Hollow Natural Looking Tree Trunk Log For Your Pets Or Fish To Explore And Play The Terrarium Or Aquarium Dacor Piece Features Two Open Ends As Well As Peep Holes In Each Side&Nbspa Wonderful Addition To Create A Nature Landscape And Reduce Stress And Boredom In The Tank With A Rough Bark Effect On The Outside To Encourage Climbing And Smooth On The Inside With No Sharp Edges To Protect Your Pet&Nbspsuitable For All Small Size Reptiles And Rodents Such As Mice, Hermit Crabs, Spiders And Skinks Or Can Be Used In Your Fish Tank Or Aquarium For A Multitude Of Fish&Nbspbefore Use In Water It Is Suggested To Wash The Log Gently In Warm Water To Remove Any Residue From Packaging