ive bred 2 blacks with rough coats and had solid black,bronze,red,chocolate,grizzle even brindles-but never ever had black and tan-so whats in my dogs pal?you can tell the patt/fell lines that have had lakie infused in them-they look to perfect imo-fells are bigger,bred for a different job and dont just come in black like you believe-to me the small,bully,smooth coated dogs are patterdales,everything else is a fell in my book-by the way THEY ARE ALL CROSS BREEDS THAT BREED TRUE TO TYPE Dogs were bred to what was doing the job at the time-regardless of colour-theres allsorts gone in the mixing