Staff are turning back the clock on Saturday, May 6 – the zoo's actual opening date back in 1937 – and encouraging visitors to join a 5km sponsored walk around the 40-acre site to raise money.
This will go towards their ambitious anniversary appeal to raise £800,000 for a new separate outdoor space for the zoo's much-loved great apes. Marketing manager, Andrea Hales, said: "Our anniversary is fast approaching and we're looking forward to marking DZG's past 80 years, celebrating our present and fundraising for our future projects.
"We're encouraging our supporters to join in the fun and dress in clothing from the zoo's opening era – the 1930s / 1940s – or in fancy dress and then join us for a party in the castle courtyard during the afternoon, where there'll be birthday cake and entertainment."
The walk starts at 11am and registration costs £6 per adult and £3 per child aged between three and 15, which includes zoo admission.
Up to four spectators per participant will be admitted at a discounted rate of £7 per person, which need to be purchased prior to the date.
Everyone is encouraged to raise at least £50, with every penny put towards the new enclosure for the four great apes, with the aim to start work within three years.