I have a Yellow lab (Jake)that I have took a couple of times
I keep him on a leash or he would run the coyotes in the next county, First time out we had a triple come in and he let me know they was there way before I seen them, I got 2 out of the 3.
I was using a Scorpion with rabbit distress. after Jake saw the first coyote he started barking and didn't stop the other 2 came on in even with Jake barking
The only thing I can figure is maybe they though he had the rabbit and they wanted it.
Take him with you just be careful
There eyes and ears are much better than ours