I just got the tree cat, the delivery was fast but I already perceives it lacks the mouse which nevertheless appears in the description. 5 minutes later, I realize that I could not mount because it is missing a screw or rather I received 2 "item 4" and 1 "POS3" then it will have to be the opposite. So I have half a tree cat without the mouse. Either I go to the local hardware store to buy a screw (which I'll probably do) or I return. If you care to have the mouse and have no notion of tinkering, this article is to avoid !!! After contact with the customer service that gave me a very quick response was told that description so the article is false and that one third discount offers me and that I return the missing screws under 3a4 days So everything is in order.