"(The dog) started having some problems with balance and had some type of seizure incident of some sort, was showing effects of having inhaled some substance," Tod Goodyear, a Sheriff's Office spokesman, told WFTV. "They administered the Narcan and got (the dog) to the vet as quick as they could."
They gave him Narcan as a precaution as they didn't know what caused the illness.
Meanwhile, police searched the passenger and found "a sedative and other prescription drugs, as well as an amphetamine and Ecstasy," according to WFLA.
Goodyear says Jake will be fine and is expected to return to work.