The dead sunfish found off the coast of the Azores in the North Atlantic weighed more than a white rhino.
The zoo previously housed Alfred, the longest-surviving gorilla in captivity at the time.
Several animals have escaped through the fence of Hluhluwe iMfolozi Park in South Africa and are causing chaos in the area.
The horns from endangered black rhinos are worth more than $428,000 on the black market and were being sent to Vietnam.
Rachael Pfeiffer, from the Care for Wild sanctuary, told Newsweek that rhino orphans are normally extremely traumatised and afraid.
"She is hope for the species and for humanity," Care for Wild CEO and founder Petronel Nieuwoudt said in a statement.
Daisy the rhino and Modjadji the zebra foal were both taken to the Care For Wild Rhino Sanctuary after they were found alone in the wild.
The rhino was left for dead after poachers hacked off his horn, leaving him with a "horrific" wound.
Even though the horns are made of keratin and have no known medicinal properties, some people think the horns cure ailments such as hangovers and cancer.
Daisy the tiny rhino was found unable to stand and with the umbilical cord still attached, and in a weak condition.
Four suspects have been arrested for the killings of four of the 22 rhinos butchered in the last week.
Nile crocodiles, common in the iSimangaliso wildlife park, are the most deadly of all crocodilians, accounting for hundreds of human deaths every year.
The elderly southern white rhino's death has been called "profoundly sad." There are about 18,000 in the wild.
The Aspinwall Police Department believes the taxidermied head is more than 50 years old and confirmed that no one has yet claimed it.
Endangered southern white rhino Kimba gets a 10-day rest before starting his new duties.
Bandhu, a 12-year-old one-horned rhino, is known for his unique talents. At his recent birthday party, he showed them off by playing himself a little birthday tune on a keyboard.
Official estimates suggest that there are fewer than 80 of these rhinos left in the wild.
Najin and Fatu seem unaware they're the last of their kind. Scientists hope they can add just one more per year.
A landmark U.N. report recently warned that one million species around the world are at risk of extinction due to human pressures and climate change.
Carl Stanley Ross Sr., 62, was found deceased on Monday morning, two days after being reported missing. He was last seen during a concert at Oregon Zoo. The investigation continues.
Zimbabwe's Bubye Valley Conservancy is closely guarded.
Last month China announced it would allow the use of rhino and tiger products under certain circumstances.
The Kenyan official made the statement during Sudan's, the world's last male northern white rhino, funeral on Saturday.
Poachers sell the horns for various purposes.