<P> JJ is very loyal to her family and friends, as well as very protective . She is also known to be a crack shot . This was demonstrated in many episodes such as "Nanny Dearest" by shooting a fleeing suspect in the head at a faraway distance . In "Revelations", she killed numerous flesh eating dogs in a dark barn . In "Penelope", she kills Garcia's attacker by shooting him directly between the eyes precisely as he turns around to find JJ behind him . Despite her petite frame, she is very athletic and has shown herself to be able to hold her own even if disarmed . In the season 7 finale, she manages to physically fight off a stronger and taller suspect who had tried to kill Will and took their son Henry hostage . She is best friends with Spencer (and is the only one who calls him "Spence"), Penelope, and Emily . </P> <P> In "The Boogeyman", JJ reveals that she is afraid of the woods . When agents Derek Morgan and Dr. Spencer Reid ask her why, she tells them a chilling story about working as a summer camp counselor and discovering her boss's murdered body in his cabin . After telling the story, she admits she was joking, and says she doesn't know why she is afraid of the woods . In the same episode, JJ also states that she has a niece who, at the time, is about 8 years old . </P> <P> When she and Reid unexpectedly came across serial killer Tobias Hankel in the episode "The Big Game", and split up to apprehend the suspect, JJ walked into a dark barn and was attacked by several attack dogs . Although JJ shot and killed the dogs, saving her own life, Reid was abducted by Hankel in the meantime, and would later be tortured and almost killed by Hankel before the BAU team was able to rescue him . After this traumatic experience, it appears that JJ developed a fear of dogs . </P> <P> In the episode "Penelope", it's announced that JJ has never shot someone until she shot the man who had attempted to kill, and who continued to threaten the life of, Penelope Garcia . </P>

What happened to jj's son on criminal minds