First thing I noticed was I had to really pay attention to the logo to read it. Something about the flag colors and the white letters, the shading on the letters, and the shading on the flag all make it blend together just a bit. Wondering if there's some way you can make it more contrasting.

Next up is the 5 stars, it's driving me crazy that the last star is farther away from the first four.

The photos are AWESOME and I love the collection... very nice animals... I also agree that the headers for each species should be above the images. My little brain got confused especially when I was scrolling.

On the Available page I didn't even realize that Available bar was a link to another page... even though it says it, I didn't read it the first time. I assumed there was nothing available... whoops! I think the animals should show up immediately when I click the Available link on the top menu. I think it's a good idea to have the terms up there but I don't have any good suggestions about how to be absolutely sure it isn't missed other than what you have already done.

All in all it's awesome and I love all the animals. You rock!