Wheekerpedia: Y

Y is for:

Yawn(ing): A wide, open mouthed yawn by a boar when another boar is present can often be the signal of worse to come. The yawn is a warning sign to deter the boar and if it is not heeded then a fight is likely to follow. Humans will do well to follow this warning signal too, whilst the fight can often be diverted and MAY just be a threat that is resolved it is just as likely that a “full blown fight” will follow.

Yellow Pages: A good place to start looking for your local farm shops and RSPCA local branch.