I've found out the world record for the Tamagotchi (1996 Pet), and how old you can get them to become! It's age 89, meaning that it is possible to keep an original Tamagotchi alive for an amazing 89 days! I admit, I'm glad I started my original 1997 Tamagotchi! Now I'm certain that if I can keep mine going for 90 days, then...!
Still, my personal record is age 12 (with Tabakotchi) so I'm still working on that. I am determined to see if I can set a new record and keep it going for 90 days. I'm interested to see how this'll go.