Wailord needs entry hazards set up on the opponent's side of the field to be effective, as foes can switch around without much trouble otherwise, limiting its PP stalling abilities. Don't be afraid to use Wailord's natural bulk to switch in on threats it can wall, such as Torkoal.
A pony is not a small horse. Horses and ponies are genetically two different species. There are horse-sized ponies, and pony-sized horses, but the genetics are what tells them apart, not the size. A miniature horse, for example, is very small and looks like a pony, but genetically, it is a horse.
The 14.2 height cut off varies across competitions and countries. To complicate things further, there are some breeds of horses known as miniature horses, which are shorter than ponies, but still classified as horses! So, when you see a short horse with a thick mane, chances are youâd be right in calling it a pony.