This was taken in 1920, so the dog will have passed on by now as well.

Now look at this photo of Kermit the frog paying tribute to his dad.

Time for something happy! Here's a picture of a woman who was miraculously reunited with her cat after a tornado.

A dog named "Leao" sits for a second consecutive day at the grave of her owner, who died in the disastrous landslides near Rio de Janiero on January 15, 2011.

Look at this amazing photo of chimps at a rescue center grieving for their friend Dorothy, who died of old age.