<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> <P> She also seems to have a slight obsession with Cheetos . She can be seen eating them often, and it was implied that her online Scrabble handle was "Cheeto - breath" when she was playing Emily (who was hiding in Paris at the time). </P> <P> In "Mr. Scratch", JJ tells Hotch that her worst fear as a child was being separated from her parents . </P>

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