Cats are mysterious animals that have been living next to humans for many centuries. It seems that we know everything about them, but we still have something to be surprised at.
1. There are 33 major cat breeds in total. And the number of domestic cats in the world reaches 500 million.
2. The pulse rate of a cat is much higher than that of a human and ranges from 110 to 140 heart beats per minute.
3. On average, cats weigh about five kilograms, but cats of the Singapura breed weigh only two and a half kilograms.
4. The smallest cats are representatives of the Indian red spotted breed living in Sri Lanka. Their weight does not exceed one and a half kilograms, and the size is about 15 centimeters.