Can animals recognize their kids after years?

This is an intriguing question. There could be ways for animals to recognize their kids once they are grown. They know it best.

Human children can usually recognize their parents even after years of separation. Studies show that Dogs can recognize their parents and siblings, but whether that recognition is based on scent or some other factor is still  not known for certain. About Birds also, the ability to recognize their offspring is yet to be known.

If a child is separated from its parents at an early age whether in humans or animals it is not possible to recognise each other after years of separation when the child has become an adult. There have been several cases reported where parents and lost children were in contact but never relaised their connection until was revealed to  them through some other source. What is being spread is what we see in films..Normally when the two grow in totally different environment it is impossible to reognise each other.