If you get the taming dodo challenge, don't do it. You need to wait. It is more of a test of strength to see how many animals you can tame. You should start out taming a raptor then get a Rex and as many as possible. U need to be ready to lose a lot of you animals in the fight. Most likely all of them. Use a bat when it is low enough health (probably after your animals are dead.) Then wack him. You will probably die a few times before you’ve got it but u will get it.