I've heard many Stories about Pets coming back to visit their owners after death, and I wish my Layla (my dog who passed away in 2013) would come visit me, but she never has. Here are some stories from people who have been visited by their dearly departed pets, and if you've ever experienced it for yourself, feel free to leave your story in the comments. : )

http://www.destinationamerica.com/thehauntist/7-stories-of-ghost-pets-that-came-back-to-see-their-owners/

http://www.true-ghost-stories.com/GhostPets.html