8. Dog urine corrodes metal
Actually allowing a dog to urinate on any lamp-post is more harmful than you may imagine. This is because the acidity of the urine tends to make the metal corrode. In 2003, an interesting study was done by the County Council in Derbyshire, as they exhausted close to £75,000 over six months studying with watchful eyes on a million plus lamp-posts accompanied by fears that the dog urine was causing deterioration of the bases. Interesting to note that during that as a result of this study, urinating dog owners had to take responsibility for a lamp-post that collapsed in Croatia due to an abundance of urine.