I am interested in purchasing a nice backpack for my dog. I want it to have big enough pockets for her to carry her own water, food, toys ect. on walks and such. I want to make sure that it is a comfortable one for her. She is a 45lb border collie if that helps any. Here are a couple that I have found so far: More information can be found here: http://www.petco.com/product/109984/Bison-Pet-Scamper-Dog-Pack.aspx?CoreCat=OnSiteSearch More information can be found here: http://www.petco.com/product/111504/ABO-Gear-Aussie-Naturals-Dog-Backpack.aspx?CoreCat=OnSiteSearch I like the looks of the second one. But I am not sure if you can go wrong with these and if their is a certain style that may be better? On the first one, there isn't a strap that goes around her chest and it kind of makes me wonder if it will stay on her as good? Thanks for all and any input.