I like them -- and I like how tightly you've framed the cat. The first two look underexposed to me, however. I think the colors would be more pleasing and it would pop more and just simply look brighter if you boosted the exposure (in Photoshop or whatnot) -- it'd end up looking more like your flower in #4.
Nice set of shots. Im particularly fond of the pink flower shot and the picture of the cat. I wouldve personally liked to have seen a bit more of the cat, mainly more of the head. The eyes look great, just not really feeling the cutting off of the top part of the head like that.