Here's Zuri the lion enjoying a Christmas tree at Linton Zoo.
And it asked for donations in a press release:
Before you throw your Christmas trees on the rubbish pile please spare us a thought. Greenery is very important to our animals, so live rooted and growing trees can be given a second chance at life by being planted in one of our animal enclosures or our new woodland area.
Trees without roots are used to decorate our aviaries and as enrichment for many of our animals including the lions, tigers and snow leopards.