A lot of people who owns pets are letting them stay in their house and sometimes they even let them sleep in bed with them. They could not resist it when their pets looks sad.
However, there are claims that letting your pets sleep with you in bed is something dangerous and should not be tolerated.
There are some people who have weak immune system which is not good for someone who sleeps beside their pets. They are powerless when it comes to the microorganisms that these animals carry. Also, these animals can carry several parasites which could infest in the body and bring diseases.
These diseases could not be treated immediately for it has to be recognized first. Furthermore, it is better to make sure that your pet is virus-free.