The link didn't work for me... but I love these videos. Compilations of these make me weep.
After not seeing my dogs for like 1.5 years they didn't know who I was at first. I was devastated. They ran past me and then it took them 10 minutes of sniffing and playing to realize who I was and then finally they were all "you're our human!!!" and were in the "I'm a puppy and I follow you everywhere" phase for awhile. They did better when I saw them after 6 months of being gone and they instantly knew me and were excited. I think 1.5 years was too long and often wondered if they thought I was dead during that time. No joke.