> I have read the kennel standard and it says nothing about colour in the tail. <
Luvapug,
The breed standard clearly does cover this,
Here is a line taken from the breed standard "(black line extending from occiput to twist) "
Do you know where and what the Occiput is and the twist is? Top of the skull to the tail
I am not going to have a go at you honestly.. I am plesently pleased to at least hear you are going to start showing and taking a stronger interest in what you actually are producing. It may be late but better late than never :-))
We see so many and loads just now for some reason of people breeding animals without the slightest idea what or how good a quality of dog it is or any understanding at all about the breed in general .I do hope you endorse all your puppies so that they cannot be bred from until their quality can be assessed. This is the best and most honest way of rectifing a deed already done. Forget breeding anymore just now, show for a few years, get involved with the breed club, attend some seminars and get an understanding of the breed.
There is nothing more rewarding for a breeder to see a decent quality litter in the whelp box that they would be proud to say the breed and actually know they are decent quality. If you are going to do a job do it right. :-)
Nobody can say something is a " decent standard" unless they actually understand the standard :-)