The California Veterinary Medical Association has been lobbying strongly against the tax, saying it could increase the cost of veterinary care by 9 percent. They say some animals may not get necessary care and end up abandoned or euthanized.
Scott, a veterinarian at Pedley Square Veterinary Clinic in Riverside, said he already has seen a trend of clients being less willing to opt for diagnostic or laboratory tests, especially for animals that are older or severely injured.
"The number of people coming in hasn't slowed," he said. "What they can afford to do has certainly dropped."
With the additional cost of the sales tax, even more people may choose to euthanize their pets, Scott said.