At 8-and-a-half feet long, Bernard the Boa constrictor is the longest resident at RSPCA's Brighton shelter in the UK. (RSPCA via SWNS)By Charlie FentonAn animal rescue center is seeking a new home for a snake, which is "Britain's longest serving shelter resident." Bernard the Boa constrictor has been at RSPCA's Brighton shelter for 1,490 days (five years), making him the charity's longest staying resident. He is eight and a half feet long and is an earthy beige colour with red and brown saddles running the length of his body. (RSPCA via SWNS)They can growing up to 18 feet long and have a life span of around 30 yearsThe animal lover said: "Bernard is a friendly snake.