Everywhere humans go, we take our pets. Fleas are along for the ride, spreading everything from typhus to bubonic plague.
Keeping pets is a habit that goes way back into our hunter-gatherer past, and has played an important part in our evolution.
A study of Australian and US cities has demonstrated that pet ownership strengthens people's connections with their neighbours.
Believe it or not, cats are really useful. Even this one.
With a majority of households having pets and growing numbers living in apartments, a review of regulations on keeping animals in such communities is timely.
Pets have been shown to have positive effects for physical health for some time, so why don't we take them more seriously?