Do dogs hold grudge?

[Izz]

ever since one of my dogs was a pup. my neighbor would always taunt him trough the fence without me noticing. im sure he would do more than that as well but now that my dog is full grown he hates my neighbors guts. he barks at him as if he wants to split em in half. he has no dog or people aggression what so ever. its just my neighbor he dont like. there was a guy workin on our house one time but on the neighbors side of our place and the man working resembled my neighbor, im inside one day and i hear some crazy barking going on and my dog is  got the man treed in a ladder. so im guessing as far as grudges YEA

[jalston]

take it a little further...I had a dog that hunted pretty good, at least he was constant had him about 2 years....when money was right I bought a better dog...when I did my first dog quit hunting and just hang around   he would hardly even come to me..i think because the new dog was better he got more attention , that he was jealous  sold him to my buddy he started huntin again...Jim

[Myles Man]

These 2 girls for some reason are starting to go at it. The yella gyp Bella is about 13 mths and has been in the yard for at least half her life, hangin out huntin with Sally, the blk/tan RCD xtra tough 10 yr old gyp.

I already know she's the one starting the fights. It's only happened twice, but last night before sundown I let Sally out as normal and 10 min later she goes to Bella and starts tearing up the chain link fence. Tryin her best to get to her. I'm gonna keep Grandma Sally on a runner or in kennel for now on. I don't know where the tension came from, but it's a shocker. I'm just half my boys get along just fine(so far anyway)
Grandma Sally

Bella