Sarpy Lakes Closed Toxic algae threat suspected "My son said he come up to the dock and the dog was foaming at the mouth," Connie told us. "He thinks he got a hold of a toad. Then 15 minutes later the dog went down in the yard and collapsed with seizures." Sarpy County authorities have shut down several lakes after the deaths of three dogs. The 300 people who live in the area are being told to stay out of the water. For the second time in as many weeks, Nebraska lake water is killing pets. Last week, Buccaneer...