Have you seen this? two englanders found a lion cub for sale in a harrods dept. store. they bought him and took him home, but after he grew too big for them they decided to release him in the wild in africa.
sometime later (i don't know how recent this is) they wanted to see him again. they finally tracked him down in africa and found that he was now a leader of a pride and had a "wifey". as soon as they saw each other he ran to them jumping and hugging them. he definitely didn't forget about them.
here's the video of it from the view that i got off youtube. it's not great quality but it is probably the most precious thing ever. seriously.