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Rare two-headed snake hatches at Berkeley pet store

  • East Bay Vivarium in Berkeley is celebrating seven months since hatching a rare two-headed California king snake named Zeke and Angel.
  • This rare condition, known as bicephaly, happens in approximately one out of every 100,000 snakes and results from an embryo partially dividing, similar to how conjoined twins develop.
  • Both heads can control the shared body and occasionally contest movements, with Angel usually dominant and the snake currently thriving at the store.
  • Staff report the digestive system functions well, with only the right head eating so far, feeding a baby mouse weekly, and the snake has attracted offers up to $50,000.
  • The Vivarium plans to keep the snake unless it survives at least a year, as two-headed snakes rarely live long, but this one appears defying usual odds.
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SFist broke the news in on Wednesday, April 30, 2025.
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