My cat used to drink from the garden pond and never seemed to suffer any ill effects, and you often see dogs drinking from muddy puddles. So why do humans have to be so careful and only drink clean water? (Continued)
• Dogs prefer puddles because tap water smells of chemicals. To get an idea of this, fill a 2-litre bottle with tap water and leave it for a few days. Then shake the bottle so bubbles on the inside rise to the top. Unscrew the lid while your nose is very close to the neck of the bottle and…
