I had a pup who once ate a pin cushion - pins and needles and all! She also loved to eat cacti, loved "playing" with porcupines (26 times pulling quills and counting) - basically anything sharp and prickly! She recently crossed the Rainbow Bridge where she can play with all the porcupines she wants and never have to have the quills pulled! I miss my girl!
Sorry to hear about your threads, but I would definitely post the picture to the Aurifil FB page. Your pup is adorable!