Via Lake Tahoe Wildlife Care:

In May, WildCare (of San Rafael, CA) admitted a young baby river otter. The otter, who was too young to swim, was found drowning in Corte Madera Creek. After stabilizing the cold and hungry baby for several days, WildCare transferred the young otter to Lake Tahoe Wildlife Care, so she could learn to swim in our river otter pool.

By August, the young otter had mastered swimming. However, since she was the only otter admitted to LTWC all summer, we transferred her to Sonoma Wildlife Rescue in Petaluma, CA, which had a (male) orphaned river otter who was also alone.

The video [above] takes the story from there.