Police spokesman Jonah Spangenthal-Lee said witnesses told officers the women began arguing about 1 p.m. Sunday when one of the mothers allegedly shoved the other's child to allow her own child to get to some of the brightly colored eggs, Seattlepi.com reported Tuesday.
"The shoving sparked a confrontation between the first woman [the supposed shover] and the second child's mother, who began fighting and had to be separated three or four times," Spangenthal-Lee said. "The brawl left the first woman with a bloody nose."
Police said the children, most of whom were 4-6 years old, witnessed the violence and were submitted to foul language.
"The second woman was gone when police arrived at the zoo and when officers tried talking to the ... first woman to see if she had any info that could crack the case, she said she wasn't interested in pursuing charges against her attacker," Spangenthal-Lee said.
Moore to attend retreat in to avoid Kutcher's wedding
Lytro unveils camera that can focus a photo after shooting it