After reading all these replies I feel so much better.
Finn, one of my Springer Spaniels absolutely hates Black Labs and if they are entire he hates them even more - something I can't understand as Finn himself is castrated. Females don't seem to have quite the same effect on him. He also hates a lot of Collies - but someone said to me once it's probably because they stare at him (big wimp). As he was a rescue from Ireland it may be that he some run-in or such like in his previous home. Saying that it's pretty safe to say he doesn't like entire males, but Labs are his particular hate.
Jan, my other Springer, loves all dogs, Black, Brown, White and I'm sure if she saw a 'purple' dog she would love that too.
We are pretty lucky where we are we have the shore along the Loch to walk and plenty of Forestry roads but I always put both of them back on their leads when I saw Collies or Labs heading our way
My previous Springer also hated Black dogs, didn't matter what breed they were - he was caught by the throat by a Black Lab when he was 4 months old and shaken and this happened at Dog Training Classes - needless to say the offending dog was banned - but the stupid owner couldn't have cared less. From that day until the day Jua went to the Bridge his mission in life was to rid the world of Black dogs, apart from his 'sister' Lucy who was a Staffy X Lab and was Black