Be wary when attempting to tame such a beast. When approached, the viscous dodo will summon a swarm of other dodos to attack the poor victim. As for knocking, I highly suggest using darts and have tribemates. It me and my tribe mates 229 darts to knock a level 5. It then ate 14k mejo and used 668 narcs. I recommend you attempt to tame this end game
I was trying to tame a dodo and built the gate trap too close to base. When I shot it with the first dart it went crazy and destroyed half our base. We lost a Rex in the chaos that followed. When attempting to tame this build the trap as far from base as possible.
Imagine A chicken on steroids this thing will lay around 25-50 eggs every hour and that's about all it's good for. A must have for any tribes looking to take to the sky however, as their eggs make getting a Ptera much easier.