Earlier this year I bred a bitch for her first litter - she's NEVER been itchy, but seemed as soon as I bred her, started scratching. Now that her litter is weaned, she's back to "normal" - no issues. Now I've bred her sister, who has NEVER been itchy either - and now all of a sudden is scratching too! Very strange - I never noticed their mother or grandmother doing that.

Anyone have similar experience? I don't want to give fish oil to pregnant girls due to toxins - any other suggestions?