Warning: This article contains images of injuries to animals some readers may find distressing.
The firm is looking to focus on a 120-acre site about 40 miles (65kms) away at Tebay, which it will run as a nature and wildlife park.
"In transition, the animals will all continue to be looked after and given the best veterinary care," Ms Brewer said in a statement.
"We are working with various agencies, including two zoo consultants, to find them all new homes that are appropriate for their longer-term needs.
"The initial development enables the movement of two of our rhinos to the land at Tebay in a safe and efficient manner knowing they will be happy with the environment we have created."