If you want to tame one all you need to do is punch it.(Clubs help speed up the process) Make sure you bring a bunch of narcoberries and other berries such a mejoberries if you want to tame them! Narcoberries keep the dodo asleep but you have to force feed them to the dodo when the torpor bar starts to get close to zero. Sooner or later your dodo friend will get hungry so you will need to get berries for him. Mejoberries, the purple berries are his favourite but he will eat any of the other types of berries as well. These types of berries you don't have to force feed him, he will eat them over time which will increase the taming bar and once it fills up completely he will be your new best friend!
On Mobile: Found lvl 290 dodo, but saved before i tamed. when re-entering game i noticed health was higher!?! So now i save-restore over and over, got over 480 health before taming, over 600 after the tame! May work with other creatures, haven't tried yet.
if u are new to ark then yes u can tame one or two but don't let ot get tooo much. i know they are cute but that's it. they are not helpful and u need to take care of them. i had so much of them and it broke my heart to kill them because i couldn't tame more dinosaurs