Build an Adobe or stone trap either works great, then build a bridge linking from the trap and place door frames all the way down the bridge on both sides to help prevent being attacked by most creatures excluding death worms while tranquil. Poision and fire are easiest to pull but if you pull lighting be warned it has been buggy for myself and a few others of the lighting shocking us up to 10 foundations away by shocking the walls of the trap, also use a keypad to close door for easy solo tranq
I got a level 150 lightning egg and I was so excited to hatch the egg...that when I went to put the egg down I accidentally ate it instead. :( ps4 users: R2 ISN'T GONNA DROP THE EGG YOU'RE GONNA EAT IT LIKE ANY OTHER EGG. REMEMBER THIS. LOGIC BEFORE EXCITMENT.