Spring has sprung, but a snowstorm hits Nebraska, forcing the Drs. Erin and Ben Schroeder to contend with unpredictable weather. Despite the snow, springtime for the docs means helping to bring new life into the world, whether it's doing a pregnancy check on a herd of 200 cattle; artificially inseminating a German shorthair dog; or wrangling a potentially pregnant pot-bellied pig.