Detectives are not revealing information about who the victim is or that person's condition.
Sunny, warmer weather is in the forecast this week. Expect afternoon highs to climb back into the 80s for western Nevada, with upper 60s to low 70s at Lake Tahoe.
Police say one person was taken to a hospital for treatment of minor injuries.
Authorities said the puppies may not have survived the 90-degree heat had they not been found within an hour of being dumped.