Betty is a female bottlenose dolphin captured on October 20, 1983 in Charlotte Harbor, Florida. Her first move took place in Flamingoland, England, where she lived until the facility was closed in 1993. The second move took place that same year at Kolmardens Zoo, Sweden, until 1997 when she was moved to Palablù in Gardaland, Italy. Upon her arrival, Betty met other dolphins such as Romeo, Giulietta and Violetta, and, following, Robin, Squeak, Hector, Amanda and Teide who arrived at the park in the following years.

Following the death of Violetta on September 19, 1999, of Hector on September 30, and of Amanda in August 2000, Betty remained the only sexually mature dolphin capable of producing an offspring. On 28 October 2001, in fact, she became a mother for the first time with the birth of a female, baptized with the name of "Naù", sired by her partner, Robin. On March 31, 2005 she had her second child, a boy named Tango, who tragically died on October 30, 2008. On December 28, 2008, her third daughter was born, baptized with the name of "Mia", always sired by Robin.

In 2013, the new management of Palablù, a British company called "Merlin", declared itself against the captivity of dolphins and, following the emergence of new background on the management of dolphins in the facility, in July of that same year Betty , together with her partner Robin and their younger daughter Mia, were transferred to the Aquarium of Genoa: waiting for them was their eldest daughter Naù, transferred to the Aquarium in March 2013 together with Teide. Unfortunately, both of them died seven years later: Teide on May 28, 2020 (causes yet to be declared), Naù on September 11, 2020 due to kidney stones that caused her severe eating and behavioral disorders.