The animals do what their genes tell them and the following characteristics prove that the animals are intelligent and can do much more if they are trained:
• ATTENTION: Sharing attention between stimulus features reduces the capacity to detect any one of them.
• MEMORY: The categories have been developed to analyze the human memory and the animal memory can be trained to respond accordingly.
• REASONING AND PROBLEM SOLVING: The animals from quite a range of species can solve a range of problems to involve abstract reasoning.