
Garfaulk Sharpstone |

So question. Looking over the riding rules, they seem to be a little... lacking? Unclear? Everything except the horse is small, and even then they're small or medium, getting larger as time goes on. Now in PF1, there's all sorts of rules about riding creatures of various sizes and the penalties you take for riding creatures the same size as you.
In PF2, I've found no such distinction. As a goblin, whose rough rider ability points out goblindog and wolf mounts, looking at wolves, they are small creatures. Does that mean goblins can ride wolves? What about bears? Or the raptors? obviously, they lose out on the work together as stated, but can a gnome or goblin or halfling ranger ride their small animal companion?
And to anyone who is going to say "No, they're both small creatures" I point out the horse. It is the only medium creature. Which means, under the same logic, humans can't ride them. So how does that work? Can gnomes ride bears?

Fuzzy-Wuzzy |

Two corrections.
You or an ally can ride your animal companion as long as it is at least one size larger than the rider. If you do, it can use only its land Speed unless it has the mount special ability. In addition, if someone is riding your animal companion and it doesn’t have the mount special ability, it can’t use the Work Together action.
I don't know why the bolded part isn't repeated under Mounted Combat, but there you go.
Second, on page 81 of the playtest bestiary, Riding/War Ponies are Medium but Riding/War Horses are Large.

Shinigami02 |

Matthew Downie is right.
Now, as it is, if you ride anything but a horse you'll likely be traveling at about the same speed as you could walk (two actions at 40' vs 3 actions at 25'), but that's a different problem.
And if you're not a level 20 Mount Paladin then you can rule anything with a fly speed right out, since without the Mount trait you can't use anything but Land speed, and the only way to get something with the Mount trait and a fly speed at the moment (that I've found) is Celestial Mount. Or maybe Polymorph.