The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Digital FarmStand:
"Talking Rubin the Cow"
Talk to him and he'll translate your words into moos. Swipe his behind and watch him dance.
Poke him and watch him slap his tail.
Tap the barn doors and take a picture or load an image to send to your friends.. Mooing Rubin is hours of fun for children of any age.
Mooing Rubin converts everything you say into Moo Talk. Shake your phone for a surprise. On iPod Touch, remember to plug earphones with mic in to have Mooing Rubin talk back to you. ------------ Features ------------ Converts Speech into Moo. Great feature for letting your friends know you care. Highly Interactive, instant touch feedback. Respond to multiple input: Tap, Pinch, Slap, Sounds.