Comment : hehe ... there are some funny people and some " funny " people on here. it is true petting an animal decreases blood pressure of the human AND the pet. it 's also true that veterinarians , as a profession , tend to have longer lifespans than others. that being said , not everyone is an animal lover. as long as those who aren 't don 't choose to " adopt " or are unnecessarily cruel , who cares ? as for the cat spray , dog humping , problems with heat - real simple - sterilization at the right age adn the problem is solved .