This is a must have for the pet on the go. Easy to provide pets with fresh, clean water. Easy to keep cool because it fits nicely in ice coolers. Keeps pets safe by not drinking water from sources that could be contaminated. Simply a must - take on road trips in the car and no sloshing of water or spills - take on walks/hikes, light weight to carry and easy to offer to pets. A must have.

Pros: Easy to use

Cons: None

This is a must for people who run or travel with their pets. Cats will use it too, but dogs will use it while you are taking a drink from your water bottle as well. I'm not sure if it is made from the "good" plastic that people water bottles are made of. Something to look into, but it is wonderful for giving the dog a drink.

Pros: Convenient

Cons: Can break if dropped on the joint.