The easiest way to kill these guys are to walk backwards while spamming your gun, or spike walls.

If your new, hang out with these guys until you have a shelter. I did that when I was starting out and it saved me and my dodo from a scorpion.

Don't, hit it randomly... It may be slow but they'll never stop coming at you. I was killed by one I hit on my first day at South zone. (I was killed at West zone 3)

A low level turtle is a great source of keratin,hide and meat but if you see one extremely high level and your under level 20, they are harder to kill than low level Raptors...