What should K-9 handlers know about the handling of water before exercise?

K-9 handlers should understand that it is important for dogs to have limited access to water before exercise to ensure they are properly hydrated without the risk of distress or discomfort. Providing controlled access helps avoid issues such as bloating or vomiting, which can occur if a dog drinks too much water right before physical activity.

Maintaining hydration is crucial for a dog's performance as well as their overall health, but it should be done in moderation. This limited access maintains a balance where the dog remains hydrated without the potential negative effects that excessive water intake before exercise could cause.

The other options either advocate for complete restriction of water or provide unfettered access, which can be counterproductive for the dog's well-being and performance.