1. First, look at this amazing photo of chimps at a rescue center grieving for their friend Dorothy, who died of old age.
2. Now look at this photo of a dog standing vigil over his master’s grave.
This was taken in 1920, so the dog will have passed on by now as well.
3. And this one.
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.