The earliest recognized film by Lars Trier (made in his youth before he adopted the "von") is this stop motion cartoon, where a super-sausage saves a bunny.
Life on Juniper
I Remember Ashes
Glasses
The Root of the Problem
Les chants de Maldoror
Love
UFOs
The Selfish Giant
The Cat's Me-Ouch
The Cats Bah
Cloudy Day
Groovity
