Yes, the Argentavis which was basically a bird had to be a giant so that it would be able to catch the horse.
If you mean Horsea, then use any rod in Whirl Islands or Seafoam Islands and you should be able to catch it eventually.
A horse can can be able to get registered in a equestrian centre
Trade it over from FireRed or LeafGreen. If you had the starter as: # Bulbasaur: You will be able to catch Entei # Charmander: You will be able to catch Suicune # Squirtle: You will be able to catch Raikou
no
a horse that has not been gelded or would be able to make a horse pregnate.
try www.horseland.com
It was colossal horse.
if a horse didn't have a backbone we wouldn't be able to ride on it
Catch Arceus. Masterballs, or just weakening it until you are able to catch it.
a unbroken horse means the horse is not trained to ride. A broke horse means he is able to be ridden.
you can not catch an evee you can only get it by trading with someone or in game trading
you cannot catch it. but you may be able to catch it with action replay. the easier way is to trade.