It's very easy to navigate and the colors are easy on the eyes.
If I wanted to really nitpick, which I'm assuming you want or you wouldn't have asked for feedback, here are some things I noticed:
Go into the "title bar" information on whatever website building software you are using and put the full name of your farm in there so it shows up in the name of the tab, since most users have tabs now, instead of the word "index" showing up. Reminds users of where they are. For instance Audie's page says "Audie's page."
On the stallion page, Mercury's stats appear in two different fonts. I'm assuming you wanted just one. they are also in black but Tyler's stats are in green like his name.
On the Mare's page, Lovie has a few different fonts going on. The description for Silk is left-justified, while the others are centered. I like the look of Silk's the best.
Holly and Tate are absolutely my favs!
Sara's name is in a different font from the others it seems.
LOVE, LOVE, LOVE the fun page!
I like the green bar at the bottom of the Memory page. It's a nice "finish" to the page and you may want to add one to the other pages. You may also want to add something at the bottom of your pages that states all images and pages are copy righted to you.
Excellent job! Again, very easy on the eyes and to navigate.