A timely reminder Suzanne. Thanks
The dog may have been trying to tell you that you are riding the wrong way
or maybe it just likes chasing moving things like bikes and cars. Maybe it has learned that if I chase bikes, the rider pedals really fast!
There are some very good online links suggesting advice about what to do if you encounter a dog - not just for on the Camino but anywhere such as while out and about in parks, on the beach or walking the streets, etc.
For the record, I absolutely adore dogs but until I get to know a dog, I don't trust it at all and do not assume anything. For example, a lot of bites are caused by dogs reacting to someone who tries to pat them.
You just don't know the life journey that that dog has had before you meet it, so it's best to assume nothing and be prepared by knowing what the recommended suggestions are and always by having a treat such as a biscuit or something that you can offer or distract if necessary.
On my first camino, I was confronted by a big alsatian type of dog on the trail. He wasn't agressive as such but wasn't afraid of me either. I was unable to 'read' this dog's intentions, so I just stood still, avoiding direct eye contact and letting him sniff my trousers (I have a dog at home and figured he could probably smell that dog on my trousers). He eventually lost interest in me and I continued very slowly at first in the direction that I was heading. Unfortunately, I'd eaten all my biscuits that day. Maybe it wanted a biscuit?
You have to be wary with dogs but more so especially where they are used to protect land, property and stock and when you are in their territory.
Also, I think I would be very, very wary of any dog pack that I see running wild. Where I live, (Northern N.S.W, Australia) we unfortunately do have a feral dog problem, and very recently, somebody's cow was killed by a pack of dogs. Whether these were domesticated dogs that had formed a pack at night or were feral dogs wild, no-one knows. We have been questioned about our dog (an old geriatric lovable labrador aged 13 years, lives inside with us 24/7) and then warned that baiting is going to occur nearby.
For the record bedbugs and mad european drivers worry me more than dogs.
Buen Camino