Creature Training is a technology that is unique to the Gungans, and can be researched at the Hvy Weapons Factory in Tech Level 4. It costs 500 Food and 400 Carbon, and makes Pummels twice as effective against Walls, Anti-Air Mobiles more effective against aircraft, and Artillery more effective against buildings.

"Uniquely available to the Gungans, this ability lets them specialise their Heavy Weapons to be even more effective in their respective roles. That is, Pummels will be much more effective against Walls; Mobile Anti-Air weapons will be even stronger versus flying units; and Artillery will cause even more damage to buildings."
—Manual description