More tigers live in US back yards than in the wild. Is this a catastrophe?

It is easier to buy a tiger in some states than to adopt a rescue dog - and only 6% of the animals are housed in approved facilities. This is bad for the big cats - and for humans

According to estimates, the population of tigers in people's back gardens in the US outnumbers those in the wild. Seven thousand of the big cats live in US captivity, whereas, despite increases, there are as few as 3,890 wild tigers worldwide. Most of the captive animals are kept in unregulated conditions, as the BBC reported last week. Only 6% are housed in zoos or facilities approved by the US Association of Zoos and Aquariums. The rest live in private breeding facilities, back yards, even urban apartments. In some states, it is easier to buy a tiger than to adopt a rescue dog.

Leigh Henry, a species policy expert at the World Wildlife Fund, says the situation threatens the work that has been done to conserve wild populations in Asia. "A patchwork of regulations governs these tigers, meaning no agency can say how many there are, when they are born, when they die and what happens to their valuable parts when they do. Illegal trade in tiger parts remains the primary threat to tigers in the wild, and the last thing we want is parts from captive tigers helping sustain or even fuel this black market."