hi everyone, my chihuahua has puppies a week old. In the last few days she has become different with them. Started with growls at the puppies. Then today she has attacked one of them and hurt it. No damage done but poor little baby was petrified. She was not trying to feed she was just asleep. Has anyone experienced this? She’s on calcium so it can’t be that. I’m worried she will kill one of them. She’s been on and off. Sometimes she wants to look after them other times she ignores them when they cry and refuses to feed them. Opinions on taking over hand feeding? Or can there be a reason for this?