If you go back to the main menu and then re enter the game on singleplayer, his desired food will change. Keep doing it until he asks for a berry for an easy starter combat/gathering mount.
Moschops
The Moschops is a omnivorous therapsid best known for its love for food. Survivors can train it to favour specific types of food — whether it be Prime Meat or Rare Flowers — and it will become more effective at gathering it. The Moschops is a very cowardly creature and will flee from any sight of danger.

Player-written tips for taming, using, and fighting the Moschops in ARK: Survival Ascended & Evolved.
The farmer of ark for beginning........
I can’t get him or her to fight with me!
Moschops are great early tames. They get you basic resource in large abundances. They also have a use in mid game too. Their eggs can be used for Superior kibble.
These things deal so much damage I killed a Rex with one it has to be high level with a lot of health and melee
I don't know why people say mosas are good at deep sea stuff. Mine just drowned right away.
Fred
I tame 4 moschops and i feed some tinotoberries and mejoberries and named kevin Washington snarl hephaestus and topsy
Taming MOSCHOPS - - Passive Tame- Feed it The Food It Requests, - - Example - It Wants mejo berrys, Feed It to it when The Thing Goes Orange . - N Put The selective food Of what it wants In Ur slots N Click, it On The Moschops, - - On control U Can Just Check Up On It Ever…
Taming MOSCHOPS - - Passive Tame- Feed it The Food It Requests, - - Example - It Wants mejo berrys, Feed It to it when The Thing Goes Orange . - N Put The selective food Of what it wants In Ur slots N Click, it On The Moschops, - - On control U Can Just Check Up On It Ever Few,
Now If It Wants Leech Blood or, Giant Honey, Cooked prime fish meat n’ If ur Not rlly high enough To Get Those Stuff Then , There’s A lot of MOSCHOPS! So u Can Find New Ones, - - -
- - - Hope This Was Helpful! ✌️- - - |- - • - • - • - - • - - - - - - • -• •-• -•-•–•-
If they need Tintoberries, you'll tame them in like, 2 feeds.
The food they perfer the most is prime fish
A must have for early game. Fiber collecting is made easy with these doggos. Just set them on wander around plants and they’re get you all the fiber you need! They run if they get attacked so try and keep up with them.
God first tame can harvest everything except for rock like so they can harvest rock
This dino is so freaking amazing easy to tame and very useful and level quite quickly... I have 1 of them I lost 1 still looking for him and 2 yet to tame
You can ride them in console and they don’t need a saddle
These things are the best start game tame they are able to kill a Rex and are amazing at gathering
Moschops can harvest sap I believe because one of the things I can upgrade on mine is sap gathering
If you are on pc this is a MUST tame because this dude is an easy source of purple kibbles and it doesn’t eat rare foods. But if you are on mobile, consider taming only one female and stuffing it into a thatch room...
Very very very useful, its cowardly and its harvesting benifits are not avaliable in mobile, but its a great early tame. Also source of prime meat, for some reason
It loves any food I suggest mejoberrys thoe