Ok i have just got into breeding rats and have since had the first litter of 7 rat pups.everythings going fine to this point then two days later i notice the female that had the babies had a swollen lump on the side of her head /neck area.Since monday evening i have seperated her ina tub of her own along with the babies Now this swollen lump has become visibly larger and turned blackish looking ? any ideas on what this would be ? and for the last answer i think i may know this but never hurts to ask Im thinking i should put her down , and the babies aswell 5 remaing as the first day i fed two boas and hadent seen any signs of any lumps when this happened. should i consider the remaing pups to be "tainted" or harmful to feed my boas" should i put down the other rats that were in with this group? any insights will be greatly headed .As i stated im new to rats so not sure if this is common for rats ? something contagious to the others ? or not so thats why i have asked thanks
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