►Elaine Cooper has named the pup after a Shrek character due to its green coat
►Female puppy was the only girl birthed out of five by two-year-old mother Milly
►Green tinge is caused by exposure to substance in the placenta called biliverdin
►Elaine and husband Mark, from Chorley, nickname pup Fifi after Princess Fiona
Source: Dailymail
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