Types of Enrichment

Any stimulus which evokes species-specific behavior can be considered enrichment, including objects, scents, novel foods, and different methods of preparing foods (for example, frozen in ice). Most enrichment stimuli can be divided into seven groups:
Environmental: changing or adding to the animal's habitat
Feeding: presenting food to an animal in different ways
Manipulation: providing items that can be manipulated by the animal
Puzzle: requiring an animal to solve simple problems to access food or other rewards
Sensory: stimulating animal's visual, olfactory, auditory, tactile, and taste senses
Social: providing the opportunity to interact with other animals, either conspecifics or interspecifics
Training: training animals with positive reinforcement or habituation
Oftentimes, these enrichment groups are combined into a single device or activity.