Goodbye anyone ever playing anything with an animal companion ever again. What you want us to go into the dungeon and fight the dragon ? heck no I am going to go kill that elephant with mithral full plate. Also Since the MIthral Full plate isn't in a shop for my super duper weird animal companion it will have to be crafted. I sure hope I can find the crafter with 20 ranks in craft armor, skill focus in craft armor, traits focusing on craft armor, and a maxxed out intelligence stat. Assuming this person works non-stop 7 days a week for there entire life I might , maybe if they don't blow a couple of rolls get to have my great great grandchildren of my elephant to wear some armor.100,00 gp to silver = 1,000,000 silver. max ranks 20, skill focus +6, Int of 20 or +5. A total of 31 in craft armor. The dc to craft armor is 10 + AC bonus so a dc 19. Taking 10 ( if the DM allows it ) will give a 41 check. 41 times 19 =779. 1,000,000 divided by 779 = 1284 weeks or just under 25 years. This assumes the DM allows you to take 10 . If he doesn't then you better hope you do not fumble . Good luck adventuring while you wait on this.