Find somthing else that you like to do to replace the comfort eating.

because it will make you fat

It is known as comfort eating. Comfort eating will not deal with the problems causing the emotions. But it will often cause the comfort eater to gain a lot of body fat.

Comfort eating is when a person doesn't necessarily eat when there hungry but to make them feel good. Its usually high calorie foods. Some even take this when they've had a bad day or feel lonely. Unfortunately it has been linked to binge eating at times.

Basically, they eat for comfort. so if you are going by the cage and they start eating.. its only for their own comfort!