@souffle and Pompompoms
Thanks for the advice!
Sad to say, the second hamster has already died :'( And my newest hamster seems to show the same signs too. I got a little stressed regarding these deaths, so as for your advice, I think I won't get any more pet hamsters at the moment. We are moving to another house in a year I think, so I guess I will have to get new hamsters when after we have moved to another place. Yes, it kinda sucks that our current house has been home to a lot of rats (there are lots but it's not like an infestation though). This made me decide to keep a cat as new pet.
I'm from Philippines, and we're having a kind of wintery season right now. The air is colder than expected, and I would not risk getting a new hamster with this kind of weather
Thank you very much! I'll still be hanging out in this forum to learn more so I can avoid repeating the same events when I get another hamster. Thanks!