It's double trouble for one zoo in Winchester where two baby monkeys have been born.
The twins, which have not yet been named, are cotton-top tamarins and were born at Marwell Zoo.
Their parents, Inca and Roca,have been teaching their one week old babies how to look after themselves but it could be up to five weeks before the babies venture out on their own.
It's not yet known whether the proud parents have given birth to boys or girls.
Tamarins are on the critical endangered list and it's estimated their numbers have decreased by 80 per cent over the past two decades.
"Inca and Roca are first-time parents and they are doing a fantastic job for caring for the twins. Dad takes on most of the carrying duties and Mum takes over to feed them. Cotton tops are generally a bold species so we are looking forward to the babies becoming more independent and causing trouble."
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