My two GSD's arent neutered ( because their ex police dogs, and where to old when i got them to neuter them), They dont mark as they were kenneled, (not now though).
But i realy do hated un-neutered dogs that arnt for breeding porposes or the owner dosnt want to because "its his manhood",
My uncle has two uneutered Cockers, they stink, untrained, piss and shit everywhere (excuse the language) and there is no reason for them not to be neutered, those cockers have put me right off that breed purly because there disobedient!
Delcey
Spay and neuter!!!!!!