I have 2 1/2 year old orange cat he is fixed he runs around yelping all day and also watches the mercats on TV then he evens imitates them small and thin and acts like no other type of cat I have ever dealt with in past. I want to know if its true if my cat doesn't have menatally challenge. He even fetches toys to retreves them. I just don't understand this one please help answer this one for me.