Try using different methods of care. Tamagotchi's being at the lowest weight possible isn't always the best thing for it. Try keeping it a few pounds over the lowest. Also try giving it toys depending on it's gender. Boys like action figures and girls like dolls. Hope this helped and you don't...
I dont know were to find animations but if you go to "Help for New Tamagotchi Owners" at the very top you'll see a top called "Special Occasions". Click that and you'll have a list for every holiday for U.S., Japan, and U.K. Hope I helped.