Veterinarians of the Oklahoma Zoo were left wondering when they realized that the 18-year-old African lioness Bridget began to grow a manger.
This phenomenon was observed for the first time in March 2017, and in the meantime an analysis of the lavatory blood was made.
However, veterinarians still do not know what caused the growth of the gripe.
Bridget also has a sister, which looks normal, reports Independent.