Lifelong parent-child bonds in the animal kingdom?

those that form packs or troupes come as close to life long bonds that I can see. Even those , however, should a new alpha assert dominance, the males offspring of the previous alpha tend to move on or they have to challenge the new alpha.

Wolves seem to pack up in manageable groups of multi generations, some of the great apes,(except that alpha problem seems to assert itself in these troupes also) and of course all colony-living bats . Insects, since colonies are all related, sorta fit that definition except that insect lives are relatively short.

http://www.google.ca/#hl=en&sugexp=les%3B&gs_nf=3&gs_rn=0&gs_ri=hp&pq=how%20many%20athiests%20in%20u.s.&cp=55&gs_id=39&xhr=t&q=Which%20animals%20form%20life-long%20bonds%20with%20their%20offspring&pf=p&tbo=d&sclient=psy-ab&oq=Which+animals+form+life-long+bonds+with+their+offspring&gs_l=&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=c5672f593531bfe2&bpcl=39650382&biw=1373&bih=708

Humans and elephants and probably a few others.

Relationships and Communication in Socially Natural Horse Herds

Ants?