This story will touch your heart.  In November of 2012 poachers killed 8 Rhinos but one cow was able to save her calf.  This story by Daily Mail of the UK captures the bond between mother and child (cow and calf).

http://www.dailymail.co.uk/news/article-2238694/Dying-rhino-leads-calf-safety-final-act-motherly-love-game-reserve-poachers-day-killing-spree-South-Africa.html