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Pictures: All the animals at London Zoo get a health check

Tarantula on a hand being measured by a ruler

Every year London Zoo measures its animals to check their health. We wouldn't want to hold this red-kneed tarantula long enough to measure it with a ruler. That's a lot of legs!

A Galapagos turtle stands on a scale whilst a zoo keeper holds up the scales digital display.

It's no easy job weighing all the animals. As you can see this Galapagos turtle was no lightweight. Those are some pretty big scales!

An emperor tamarin sitting on some weighing scales.

This emperor tamirin jut wants to monkey around - sticking out it's tongue out on the measuring scales.

Zookeepers hold a tape measure up against a milk snake to check it's size.

Sometimes they need some pretty long measuring tapes to size up animals like this milk snake.

A tamandua licks a branch as it sits on some weighing scales.

This tamandua finds a branch to lick whilst the zoo keepers check how much it weighs. Tasty?