(Portland, OR) -- Protesters are calling on the Oregon Zoo to release its remaining elephants to a sanctuary following the death of its youngest elephant, Lily. Protesters gathered for a rally and vigil Saturday night at the Oregon Zoo entrance. The protesters say they're upset over what they see as a lack of care for elephants at the zoo. They're also asking the zoo to end the practice of breeding in captivity. Six-year-old Lily died suddenly from a virus late last week.