Get a wyvern it might take you of your wyvern so be careful step 1 find thyla you want step 2 strategy 1 make a trap step 3 strategy 2 use bear trap step 4 strategy 3 let wyvern tank it all and shoot it step 5 shoot with tranq arrows step 6 feed meat ( mainly cooked meat it likes more especially cooked lamb chop) I used step 4)