Linton Zoo in Cambridgeshire has been welcoming photographers for behind the scenes photo-shoots.
40 photos which were taken during the events have been entered into a photography competition.
The zoo says the standard of entries was outstanding. The winning shot of Zuri the lion was taken by Ellis Hall of Cambridge.
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It will take time for the temperatures to climb in the morning but it will be a dry but cold day with plenty of sunshine.
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The chance of the odd shower for the next few hours but in general a dry night with clear spells. Turning very cold with a frosty.