The Sanctuary released this statement: "It's with an extremely heavy heart that we announce Myla did not survive her surgery today. We will post more later, but we are far too sad. Thank you for understanding."
Myla's owners had raised her for seven years, but handed her over to Maricopa County Animal Care and Control, saying they could not afford the surgery to remove the mass, which had grown dangerously large.
"The bigger it gets, it'll start cracking, so it's at a point where it needs to be taken care of," Kim Sasso of Forever Loved Pet Sanctuary had told 3TV.
The sanctuary initially had said Myla survived the surgery, but she reportedly died several hours later.