I need to clear something up that hasn't made any sense to me an a while. We all know the Fourth Amendment (here's a reminder); Fourth Amendment – Protection from unreasonable search and seizure. The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized. All my life I've been told that in order for a cop to search anything I own (including my car), I have to give the full consent to do so. Probable cause is only grounds for an officer to obtain a warrant if you refuse to give your consent. Is there any truth to this? I see a lot of posts on here, and I know a lot of fellow stoners that say a drug dog detecting drugs is "probable cause" to immediately search your vehicle without a warrant. I'm just not sure.