I'm using the program PCGen to create my Pathfinder characters and I created a samurai. I created the mount and made it a large horse. When I load the character sheet for my horse on PCGen, it says that its Bite attack should do 1d8+4 (it has 18 STR) damage, but the other sources I'm seeing say that Bite should do 1d4 damage. Is there something I'm not seeing that's making my horse's Bite be 1d8 instead of 1d4 or is this a mistake?
There was a problem that I had before where it had me choose 2 favored classes (I was a half-elf) and I didn't know why so I thought it was a mistake too. It wasn't until later that I found out that being a half-elf allows you to pick 2 favored classes. This is why I'm wondering if I'm just again not seeing something that's causing the Bite to be 1d8.
Anyone know of anything that can change a horse's Bite from 1d4 to 1d8?