Good to know not to feed cows milk/cream to any future rescues (although my first lived on it for almost 2 weeks and then lived a healthy 2.5 years so I'm pretty sure it's not the worst thing I could've given her
).
I doubt it was choking as I fed him and then played with him for quite a while and he was perfect. Yes, I was stimulating him to pee/poo, although he was also doing it on his own also.
I got some great advice on how to raise baby rodents with my first one and followed it with this one (minus the cow's milk thing - that was my own idea... :sad: ) so I think it just had to be that he was sick or injured already.
At least he spent his last day warm, full, and safe.
Thanks everyone!