But there was one factor that continued to hinder their odds of getting adopted; they needed to be adopted together.
"They eat beside each other. They sleep huddled together. They do everything together," says Mclaughlin. "They're definitely best friends and we wanted them to stay together."
After four long years at the shelter, it started to seem that the bunnies might never find a better place to live - but the day finally came. A couple, who have adopted many small animals from the shelter in the past, came in to give Monty and Betty Boo another look, and found them to be far more friendly than they had been before - and they decided to take them home.
The shelter staff was in disbelief, but pleasantly so.
"The people who took them are absolutely amazing," says Mclaughlin. "There were many happy tears. Everyone was jumping up and down or crying. It really was amazing."