Dogs Trust Ilfracombe is appealing for a home for Ellie, a Spaniel cross who has been overlooked by hundreds of potential new owners despite her sister finding a loving home of her own.
The 18-month-old has been at the rehoming centre for 6 months.
Despite her near identical sister Mollie finding her forever home last October, Ellie is still looking for a special someone.
Ellie is a happy, healthy dog with one blue eye and one brown eye. This is due to less pigment in her blue eye which doesn't affect her sight.
Elise Watson, Rehoming Centre Manager at Dogs Trust Illfracombe, said "Ellie and Mollie arrived at the rehoming centre at the same time but weren't necessarily looking to be rehomed together."
"Ellie is a wonderful dog and we think her blue eye is really striking!"
"She is looking for an adult-only home and owners who are prepared to come and meet her a few times first to start to build a bond."