Sadly, Arlo recently became ill with an aggressive case of pneumonia and is currently fighting for his life at the HSSV hospital. Veterinary staff are still trying to determine whether or not Arlo is contagious. Once he's clear, he and Spot will be reunited - she is currently being kept with another dog while Arlo is treated.
It's still unknown how serious his situation is and, until he gets better, adoption requests for him and Spot will be on hold.
Humane Society Silicon Valley