(NEWSER) – Researchers in Japan have discovered only the second known chimpanzee born with what is, essentially, Down syndrome, according to a study published in Primates. Kanako, a 24-year-old female chimp, was born with trisomy 22. Her symptoms largely align with the symptoms seen in humans with Down syndrome, also known as trisomy 21, according to a press release. Kanako developed vision problems at a young age that eventually led to her being blind by the time she was 7. She also has congenital heart disease, teeth that are underdeveloped, and stunted growth. While it’s unclear how or if trisomy 22 has affected Kanako’s behavioral development, researchers say there’s evidence against “severe retardation” based on what has been observed in her daily caretaking.
Chimp With Down Syndrome Is Only 2nd Ever Documented