udtd (udt)udtdxudvstudxudxtdxudxvstukculnaumbilical herniaumbilicusunbenched showunderage damunderage sireundercoatunderlineundershot jawundershotunentered dogunilateral cryptorchidunited kennel club (ukc)unsoundupper armurethrolithsurinary incontinenceurination - excitementurination, submissiveurticariauterine inertiauterusutility dog (ud)utility dog excellent (udx)utility dog excellent tracking dog (udxtd)utility dog excellent tracking dog excellent (udxtdx)utility dog excellent variable surface tracking (udxvst)utility dog tracking dog (udtd) (udt)utility dog tracking dog excellent (udtdx)utility dog variable surface tracking (udvst)uzerner laufhund
