Also yea, that folks is why War Horses are incredibly useful and expensive. DL 25 Riding Roll to stay in control of them if you ride them into battle otherwise you are either paralyzed for a turn, sent off running in the opposite direction, or thrown to the ground while your horse runs away. 

you could also get them as Uncommon animal companions (that way they know a few tricks as well and are more easily handled by yourself). 

when magic gets more advanced, may also introduce a Familiar Trait and make it possible to make a Bestial Companion your Familiar (so this way you don't have two animals to take care of). 

Also, realized one thing. It may be possible to get Criticals without getting a 20 (like if the DL for something is 15 and you have a 19 score for the Roll, you Roll a 16 on the dice, boom, 20 above DL, equals a critical). The XP bonus from getting a Critical only counts if you roll a 20 on the dice. You can still get a critical just from your score itself and the dice beating the DL by 20, but you don't get an extra point of XP unless you get a natural 20. 

So yea, that takes care of that if anyone is wondering.