Why did the 5th pig drink so much water worksheet?

The 5th pig likely drank so much water because pigs have a limited ability to sweat and regulate their body temperature, so they rely on water consumption to cool down. Additionally, pigs have a high metabolic rate, which can lead to increased water intake to support their physiological processes. It's also possible that the pig was dehydrated or thirsty due to environmental conditions or lack of access to water prior to the observed behavior.