Leveling Up Mounts

[Conseq]

I'm a bit confused as I did search this but different posts say different things.

But are all the mounts you can collect leveled up together? Or do you level up your mounts individually and whichever one you currently equip are the bonuses you get? If that's the case should you hold on using your training whips until you get a better mount?

[bladewarior]

you only lvl youre main mount you get at lvl 40, the specials other mounts are instant stats you dont have to lvl and they all stack up ontop youre main mount