They seem to give little thought to the possible consequences listed above. We can do so by enriching the daily life of the indoor cat to replace some of the stimulation and activity it would otherwise receive as a freeroaming animal. This environmental enrichment puts complexity, unpredictability and choices into a cat's daily life. Without these things, many animals and people become frustrated in confinement and show signs of boredom-greater reactivity, irritability and exaggerated or unusual behavior. This can be done in many ways, some of which suit some cats better than others.
Cats are notoriously individualistic.
Some activities involve the owner in active participation, while others just have to be set up and left for the cat to use when it wishes. By doing more for their cats, owners also enrich their own lives. Chasing and Jumping Small fast-moving objects cause the innate chase response in kittens. Most mature cats will continue to show it, particularly when they have practiced it all their lives. This can be done with small balls, such as practice golf balls that are hollow and have holes in the surface, or items such as scrunched up pieces of newspaper, pulled quickly and erratically on the end of a string.