Cross-species jumping is the ability to move from one animal species to another without physical barriers. It's like teleporting from one world to another. The first known case was reported in 1881 when a cat jumped into a dog kennel. Since then, there have been many cases of animals crossing species boundaries. Some people believe that this phenomenon occurs because of the similarities between species. There are different theories regarding why cross-species jumping happens. One theory suggests that cats and dogs share similar body structures, such as their eyes, ears, teeth, paws, tails, etc. Another view says that they are attracted to each other due to their smell. Finally, some say that it is just a coincidence.