Is a police officer, when he/she is the first to find a dead person, questioned, just like any other person would be?

I’m sure they are questioned, in the case that you mention, where a police officer “discovers” the corpse. But most of the time the police are called after someone else discovers the body (or the officer may be searching for the body, for example, and be “the one” to make the find, and in that case there’s no need to question him).

They would give a report about finding the body. But would not be questioned unless there were extenuating circumstances (like if they knew the person).

I think that in certain circumstances they would be questioned, yes. At the very least they need to provide a statement or report for evidence.

Has anyone seen John?

Anyway, yes, I’m certain that they have to fill out a lengthy report and are asked very thoroughly what happened.

Police can do anything they like. For example, a police officer can shoot an unarmed man 41 times (as long he’s black) and be completely exonerated. A police officer can put a gun into the back of a man lying prone and helpless on the ground and murder him in front of dozens of witnesses, all filmed on multiple cameras and cellphones, and spend less than 2 years in jail. A whole swarm of police can pump 50 bullets into three unarmed men without warning, killing one of them on the morning of his wedding, and then dance off on their merry way with nary a harsh word against them. A cop can put a teenager face-down on a couch and splash his brains all over the wall with an execution-style gunshot to the back of the head and get nothing but a free paid vacation for his trouble. The question is not whether a cop would be under suspicion, but whether anyone would or could do anything about it even if he was.

When we find a dead body while working on the ambulance crew, we have to wait for the Sheriff or the Coroner to interview us and release the body. I imagine the police get put through a similar procedure when there is no foul play suspected.

It would depend on the state of the body. If a policeman finds a body that’s been in the trunk of a car for days, he wouldn’t be under suspicion (unless it is his own car). If he “finds a body” of a young woman that is still warm when his back up and the coroner gets there, he’ll gte questioned.

The cop who found the body needs to write up his/her report. The extent of questioning will be along the lines of the following:
—time of discovery
—reason for being where the body was found (were you called, did you locate the victim, etc.)
—did you touch/move/alter the scene in any way (e.g., did you check for a pulse and start CPR or do anything to compromise the scene).

Much of the questioning has to do with the circumstances under which the body was found.

Its not much a questioning session, as it is a factual session. Like who, what, when,