Go Slow. The brothers learn about animals that like to take things slowly. They discover the top speed of a giant African land snail and see just how slow a sleepy sloth can get. [S]
The Birthday. It's a day of new arrivals as one of the pygmy marmosets gives birth and the penguins lay eggs. It's also Tilly the red panda's birthday. Also in HD. [S]
The Reopening. The zoo has its grand reopening to the public and the brothers recall the incredible story of how their family zoo came to be. Also in HD. [S]
The Tigers. The brothers celebrate the opening of their biggest and best enclosure yet, a huge new home for Siberia and Aleena the Amur tigers. Also in HD. [S]