I have been having this debate with a friend.
People take time from work when Loved Ones pass on. When you hear Loved Ones you naturally think, Grandma, Granddad, Mother, Father ect... It is natural to take days or even weeks off from work when dealing with the grieving process.
Some people contend that Dogs, Cats, fish ect.. are loved ones and need time to grieve also.
I am a huge animal lover but draw the line at people saying animals are "Loved Ones" and then need time from work to grieve for their "Loved One". In the case of a Dog or Cat passing on i can see way for taking off a day to properly handle the remains collect yourself and whatnot, but more than one day off from work just to grieve and I'll go out on a limb and say there is something emotional wrong with that person.