Animals that travel in and out of cities in search of food or a safe place for their young. African penguins have found the streets of Cape Town a safe environment from predators, while still providing easy access to their fishing grounds, while in St Lucia, hippos have developed a taste for eating residents' lawns. Black bears roam the streets of cities across North America, seeking out discarded food to help them consume the 20,000 calories a day they need to survive their six-month hibernation