Megalania x Managarmr. It can freeze, give rabies, crawl about, and give insulation.

I'd love to see a Baryonx/Raptor type thing!

Excellent in the water and has the ability to pack up with others

would love something cute and furry, like a pegomastax and shinehorn or otter mix

A hybrid of hyenanodon and gallimimus, of thylacoleo and raptor and mosa and giganoto would be fine.

How about something like a Bront/Diplo mixed with an Anky/Doe? Huge dino with a smashing tail and armoured plating

how about daedon and Wooly Rhino? It'd be cool to have a mammal hybrid in the game

i cant help but ask for a troodon wyvern hybred, so it can scout, fly, and do the tranq poison

Sorry for posting so much, keep thinking of new things.

Pelagornis/Quetz - Huge size and carry weight, can land on water.
Thyla/Megalania

Karkinos/Araneo

I didn't think it was enough when it could only grab you, I think if it shot webs at you too it'd be a lot more fun.

Rock elemental/Beezobuffalo it'd be a bigger version of the frog which is full of rocks. It'd have two attacks, one swing of the tongue which has rocks on now and the other it'd spit a boulder from it's mouth that rolls on the floor for a bit. Hopefully you could make it still jump. You can ride it too.

Oil or water jug bug/sabertooth it'd be a saber with mandibles like a bug, wings and one extra pair of bug legs. It'd be able to climb walls and glide a bit with the wings. Depending on the bug the 2nd attack would either throw oil that sets on fire or throws a puddle of water that'll let you drink from. The first attack would be a bite that deals bleed damage. Also able to ride.

Otter/Dilophosaur it'd be an otter with a dilo tail and frills that stands up right and still swim well, big enough to ride. You can spit acid that deals moderate damage and blinds an enemy and just a normal bite. Moves at the speed of a parasaur and can have packs. Rideble

i would love to see a fire wyvern with a rock drake to make a magma drake or somthing related to fire

i would like to see what a saber/wolf would look like.

A rex/wollyrhino-hybrid would be cool

how about kapro/deino hybrid?

Rock Elemental and Forest Titan hybrid?