I have bags and bags full of makeup that i don't even use!  
Hoarding is a behavior where people or animals accumulate food or items
Yes, and I have this behavior!  I can't seem to party with any of the makeup.  Some of it is about 5 years old!
Hoarding is a common behavior in many birds species 
Yes, but I'm not a bird. I'm a human. 
lol. Most animals caches are of food
Well, I do love to hide potato chips from my husband. Does that count?
Human hoarding may be related to animal hoarding behavior