Animal House is the first album by U.D.O. after Udo Dirkschneider's departure from Accept. It was recorded August-October 1987 at Dierks Studios, Cologne. Released in 1987, it charted at #41 in Sweden.
The performance of the song "Lay Down the Law" is credited to Accept and U.D.O..
Pulheimer Kinder- und Jugendchor contribute vocals to "They Want War".
In some releases a picture of the tour band including Dieter Rubach and Andy Susemihl was shown in the booklet. The album cover shows the line-up that recorded the album. An "Animal House" Tour followed in early 1988. During this time they also toured with Guns N' Roses, Lita Ford and Zodiac Mindwarp. After Rubach left the band, they supported Ozzy Osbourne on all European dates in 1989.