I don't think its tail is ugly, personally, but then again, I don't know any dog breed that is ugly in my personal opinion.
What an adorable little photo you have here, and what a beautiful breed! You've got a lovely clear shot of a dog and its anatomy here and it'll come in handy for me, since I like to practice my anatomy. Great shot! Loving his cute little expression. If I make anything using this I will show you, if you like, since you do like to see what's made with your stock. Great job, and well done on getting a Daily Deviation on this.
Nice photio, is that a Greater swiss mountain dog?
One of my favorite of the mountain dog breeds, right next to the Bernese.