[christoff12]

I'm a little surprised zoo animals aren't chipped with some kind of beacon locator for incidents such as these.

[ErroneousBosh]

What sort of size do you think that would be?

[Luc]

Small and low energy enough that tiny migratory birds can wear them for months. Externally worn of course (e.g. attached to the ear, for a wolf).

You could adjust the firmware of a wildlife tag to start transmitting location every 10 minutes when the animal leaves a geo-fence.

[ErroneousBosh]

Bird ones are easy because birds are high in the air, so there's nothing to block the signal.

They are also not implanted in the birds, but are a relatively large "backpack" or leg tag.

[christoff12]

No idea. Surely some enterprising engineer could come up with a viable solution that could be sold to zoos all over, though.

[chrisweekly]

size of chip? they're tiny. dog owners typically have the vet "chip" their pet as a puppy. full-grown dog doesn't need a bigger chip.

[codebje]

Those chips need to be scanned from about 3cm away. If you want a locator tag, it needs to carry enough power to broadcast a signal a useful distance. Still, a microchip is handy if you're not sure if it's your tiger you found.

[jannes]

Those chips cannot track a dog's location

[tgsovlerkhgsel]

Somewhat smaller than a regular airtag.