"We were thinking it was probably a possum or weird cat but the caller insisted it was a seal," wrote the Hayward Police Department on Facebook. "Well lo and behold it was a seal!"
A Center spokesperson confirmed that finding, telling KRON-TV, "[We] were able to identify him as a male northern fur seal pup called 'Pipester' who had previously been in the Center's care for malnutrition."
The Marine Mammal Center is now treating the strange sea kitten for dehydration and plans on releasing him to the wild soon.
Pipester, far left.The Marine Mammal Center