Nacey's little pug tail is up and as curly as can be. However when she is relaxed or sleeping her tail unrolls and hangs down straight.

Nova's tail is always up and slightly curved.

Bitsy's tail is usually up and curled onto her back. Sometimes it hangs down, usually when relaxed.

Buster's tail is up with the slightest curve.

Charlie has a little stub that really can only stick out straight.