The only Jewish survivor of the Chabad House attack in Mumbai is two years old. After the terrorists bound and gagged the other people in the house, they refused to kill a baby and sent him with his nanny downstairs, allowing her to escape with the child.
It’s hard to recall a single instance when Palestinian terrorists have spared a baby. The Israeli government recently released an Arab star terrorist, Samir Kuntar, one of many Arabs who have murdered an entire Jewish family.
You’re right, terrorists are not nice. Here is a Chabad article on how he was rescued.
http://www.chabad.org/theJewishWoman/article_cdo/aid/775716/jewish/Sandra-Samuel-A-Heroine-in-Mumbai.htm