there's only one way to find out:
Came bounding out of the ferns in front of me - on a flat sandy path in Horsell common and I wasn't going too fast. I normal slow right down for all dogs I see but I obviously didn't see this one.
Don't think I hit him too hard, more of a glancing blow, as he didn't yelp and his owner reckoned he would of if it had - I was over the bars and banged my helmet as usual (only just replaced the last one) but not much of a blow.
Dog was only slightly unsettled afterwards - owner put the lead on but I asked her to let him go to see if he was veering to the left or right, but he was ok
Hope Pro 3 XC-6 with Stans 355 - it has been to CdB, all over tunnel hill, surrey hills, north downs, swinley with no problems so maybe it was the glancing aspect.
However I had just changed my tyres to Mud-X and used a CO2 cartridge to inflate, which is obviously a cold blast. Wonder if that had anything to do with it?
Now to get it rebuilt...