My understanding is a dead body does not bleed. If what the Park Officer said was true then Foster had trauma inflicted on him before he was shot/shot himself in the head.
Dead bodies will bleed... But they do not bruise...
Head wounds especially bleed. Quite a lot as a matter of fact.
It is pretty gruesome.
Depends on how it got dead, eh? You've never chopped a chicken's head off and seen its convulsions?