My cocker spaniel gave birth on Sunday, the final pup was born about 9.30am. Most of yesterday she was panting quite heavily but seemed very peaceful and was happy to stay in her box with the puppies. Today the panting has subsided but is still there on occasion. She seems to go through phases of being normal and then heavy panting. I've just been into see her and she's in the box with all the puppies feeding happily, but her breathing is very shallow. Is this normal behaviour for the first and second day? I know I need to look out for Eclampsia, but have read that this doesn't normally happen until later on.