The females are pure speed. They can't attack, however they can jump really far. I've had a few die that way. The males however, they sent as fast, still have the super jump. But they are the best thing to ever use for thatch gathering. Its worth it to get this as soon as you can.
My fastest mount. Best for taming because you can shoot tranqs from the back of it while keeping your distance. Then when the animal your taming decides it's time to turn tail and run you can chase it down and shoot tranqs at it. I love the moose! Females are fastest.
The males have really good aoe attack and damage. They also gather thatch really fast. The females are faster speed but cannot attack. The males are overall much better and still fast. A few levels in speed and they get fast.
For all you on mobile. This is your best friend. The females will shove predators off of you to protect you (dispite them having no way to defend themselves), not only that but they double as the fastest animal on the ARK. They also litterally fly over land.
They are very good combat and transport mounts. The males can attack, which allows them to gather thatch very efficiently. The females have no attack, but are a little faster, as there are no horns to weigh them down. There's also something satisfying about riding a moose. WHEEEEEEEEEE
Surprisingly good fighters, my rank 10 Mega is taking down carnos and argies on death island, and escaping with barely a scratch. I suggest upgrading health stamina and speed to maximize survivability.