If the cops thought it did they wouldn't have bothered letting a drug dog sniff the car. They would have just opened the trunk themselves, right? So that's not the issue.
Tell me, if this dog had reacted to beef jerky in this case,... What I also enjoy is how the SCOTUS allows their decision to rest on the infallibility of a dog.
This goes back to whether a dog sniff provides probable cause for the search of the trunk... not whether the cops needed probable cause to conduct a dog sniff. Whoa... Deja vu. The court addressed the second, not the first question. Where have I seen this before? The decision (read it) has nothing to do with the fallibility or infallibility of dogs.
The legitimate interest in privacy covers places, not things... The roof of your car is fair game. The trunk, when closed, is not.
And, then... I assume you believe that a wrapped package is not fair game either?
if you put something under your seat, even if it's an illegal weapon or drug, you do have an expectation of privacy because the location where it is stored is not within plain view.
No. Since you don't have the constitutionally protected right to possess an illegal drug, you can't have the constitutionally protected right to hide that illegal drug. The cop can't look under your seat because if he thinks there's a drug under there and he's wrong your privacy has been unnecessarily violated. On the other hand, the cop can let a dog sniff your trunk because if he thinks there's a drug in there and he's wrong your privacy has not been violated.
And don't bother twisting my words. My statement doesn't imply that if a cop's hunch is right, the joint he found in his illegal search should be used against you. To protect the innocent, you must defend the guilty.