The road must be shared. Not only with bicycles mind you, but with all manner of excreting beings.
- Horse poo - while not too stinky - tends lumpy, and is most likely to knock your bike from under you. Found not only on long rides through rural parts, but in the centre, where smiling out-of-towners fritter away large amounts to take short loops using out-of-date transport.
- Bird poo is the least objectionable, unless you ride through it before it hits the ground. At mouth-height, say.
- Dog poo has few fans. Depending on the animal's diet, it can create a hazardous slipping effect under a slick tire. Those with low clearance on their brake will find the mechanism becomes rapidly clogged with hard-to-shift brown stuff.
BONUS TIP: Fenders, front and rear. Having the brown sequins up your back is a dubious mark of honour when they have a silent smell, but when it's poo, it's a clear bugle call you have stopped caring, and may soon cease wearing pants.