North American River Otters are popping up in places they haven't been seen in decades and nobody really knows why. As we search for answers we discover a trail of fish heads, poop splats and cuddle parties.

Guests: 

Katrina Lohan, head of the Coastal Disease Ecology Laboratory at the Smithsonian Environmental Research Center 

Alejandra Morales Picard, psychologist at Montgomery College 

Rebecca Sturniolo, assistant curator of the America Trail at the Smithsonian National Zoo 

Patty Storms & Marty Bachar, otter neighbors