Megalooceros are easy tame because they are passive but once hit they run away which is bad for itself and you because it will run into other creatures. Such Rexes, raptors, sarbertooths, scorpions, Argys, allosaurus, thylas, yutys, daedons, and Carnos. Also other dangerous creatures. All you need are bolas to trap it, tranq arrows or a club to knock it out, and berries or crops to feed it. And done have a good day with your deer.
You will need: Argy with saddle, a bola, berries and a base fairly close to the redwoods. (maybe in southern islets?) Step 1: Hop on your argy and fly to the redwoods. Step 2: Find a female megaloceros with no creatures charging at it or attacking it. Step 3: Pick up the female megaloceros. Step 4: Land at your usual stamina regain spots. Note that whenever you land, you will drop the megaloceros. Make sure to pick it up again. Step 5: Once you're at your base, if you have spike walls surronding it, put the megaloceros in the middle so it won't die. Step 6: Bola it, knock it unconsious with your fists, and give it berries (50 is good, but if you have a berry plant, take all the berries from that plant and put it in the megaloceros' inventory.) Step 7: Wait until it's tamed. At your base, it's safe. Step 8: Name it, and i reccomend to breed females to get strong males, and fight with males. Don't get your males killed! Also keep females to keep the cooldown at bay. Please ^ if this was helpful!
Here is a great tip for taming these. When you fly to the redwoods, MAKE YOUR FLYER AN ARGY! When you knock it out and the area seems safe, note that other creatures (purlovias, terror birbs, carnos etc) can spawn and kill your megaloceros! With an argy you can protecc your megaloceros, by killin' dem carnz, Killin' dem Terror birbz and killin' all dem tingz who come near ya moose! I was taming one while flying on my argy, and i had to kill: like a million terror birb packs, one carno and one purlovia, all to protect my moose. Her name is Sprinkle, and she is pregnant now, and safe thanks to my argy. Argy's also have great stamina, so you can hover over your megaloceros and protect it. Pteranodons can't protect very well, don't have great starting stamina etc. USE AN ARGY TO PROTECT YOUR FUTURE TAMED MOOSE! P.S One like=one hope sprinkle's future baby is female!
Easy tame, just use bolas, trap/protect it with spike walls, feed berries, and use narcotics/narco berries to keep torpor up. I play on a small tribes server and tamed a max level in less than an hour with 3x.