Children were left heartbroken after their pet guinea pigs and chickens were stolen from the garden at Noah’s Ark Nursery in Newhaven.
Pupils had given the animals names and began to think of them as their own pets.
Now the nursery is considering installing CCTV to ensure the safety of any animals it keeps in the future and to protect the building.
Parent Feh Colley said: “I am furious how some ‘people’ can behave.
“My son loved the animals, especially the chicks, and talked about them all the time, he will be really upset. I think it’s disgusting.”
PTFA chair Shelley Ramzi said: “We are absolutely heartbroken.
“Its unbelievable that someone has not only broken into our nursery but have also stolen our children’s baby guinea pigs and young chickens that the children of the nursery have named and nurtured since they were eggs!
“The children, staff and parents all adored them.
“Nursery staff and families took time out to build our chicks an amazing coop recently and now this has happened.
“It’s such a shame. Now we hope to raise even more as a PTFA at our open day on Saturday August 9 so we can ensure the security of our lovely nursery.”
Sussex Police said they were called at 10.45am on Monday June 30 after three chicks and two guinea pigs were stolen from Noah’s Ark Nursery in Railway Road.
The animals are believed to have been taken between 11.30am and 6pm on Saturday June 28.
A spokesperson for Sussex Police said: “We would urge anyone who has any information about where the animals are or who has taken them to contact us.”
The chickens were bought as eggs and the children have been raising them ever since from birth. They were just five weeks old and had been named Rosie, Amanda and Luigi.
The guinea-pigs, Mable and Ginger, were only eight months old.
Deputy manager of the nursery, Sophie Lucas said: “A lot of the children were really attached so they have been really upset.
“We are all really upset because we love them to pieces. Quite a lot of our children don’t have pets.
“They treat them like their own pets.”
Anyone with information should call Sussex Police on the non emergency number 101 quoting serial 456 of 30/6, email email@example.com Alternatively they can call the independent charity Crimestoppers anonymously on 0800 555111.