Keepers at Bristol Zoo have meticulously counted around 10,000 animals as part of its yearly census.
Every animal across the 12-acre site, from the smallest ants to the zoo's gorillas, has been counted to make sure their numbers tally with the zoo's records.
The animal census was carried out on Friday (December 27) and takes staff members, armed with clipboards and spreadsheets, most of their day.
Animals include many endangered and rare species such as the golden poison arrow frog - of which the zoo has four.
Other species prove more of a challenge to count, such as the zoo's colony of Leafcutter ants.
The ants carry numbers carved into the leaves while they are counted during the annual stocktake.
Senior invertebrate keeper Carmen Solan said: "Our leafcutter ants may be tiny but they are absolutely fascinating.
"Each ant has its own place in the colony - the queen rules the roost and can produce up to 150 million offspring in her lifetime.
"Among the workers, there are gardeners tending to the fungus, soldiers defending the nest, and foragers hustling to find, cut and transport the best leaves.
"Each ant can carry a load more than 20 times heavier than itself - the equivalent of a human carrying five adult male grizzly bears."
Friday's count also includes the zoo's flock of black-cheeked lovebirds, which are some of the noisiest creatures at the attraction.
2019 saw the arrival of 30 chicks making its 95-strong flock one of the biggest in Europe.
John Partridge, senior curator of animals, said: "Counting the animals is an important task because it acts as an audit to check that our records are accurate.
"We have precise information on individual animals and groups, which we share with colleagues around the world to help care for the animals."
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