If you have a cat then you probably already know that she has some amazing features. Even if you never had a cat, read these interesting details about world most popular pets and you might change your mind. Four thousand years ago, in ancient Egypt, the cat was considered sacred animal. The death penalty was given to anyone who would kill a cat. Members of the family whose cat have died would cut their eyebrows as a sign of mourning. One of the oldest law on the protection of cats was made by the Saxon King Henry I. He ordered that anyone who kills a cat shall pay a penalty equal to 60 baskets of corn. In the year 1888 amazing discovery has been made: 300 mummified cats were found in the city Beni Hasan. Their remains were sold for 18.43 $ per ton and were shipped to England where they were used as fertilizer. Little known fact about Isaac Newton is that he invented cat door so he would enable his many cats to enter and exit house much more easily. Today cats still are one of most popular pets.