While quietly walking my small dog, we often pass houses where the dog inside, which is out of sight, begins barking. How does the dog know to bark if it can’t see, smell or hear us?
Pam Lunn, Kenilworth, Warwickshire, UK
I wouldn’t assume that the barking dog is unable to smell your dog. The houses you are passing aren’t hermetically sealed. Dogs can detect scent molecules at very low concentrations in the air.
Peter Holness, Bengeo, Hertfordshire, UK
Canine hearing can be acute. My dog, Arby, knows the “acoustic signature” of his metal bowl. A “ting” from the most…
