I love these bowls. I use these in my dog crates to feed them their kibble. The bowls have two little plastic prongs that you can snap on over the wire of the crate. The downside is that when they are first purchased, sometimes it is hard to get them pushed down onto the wire properly. Over time, it really gets easier as the plastic stretches to accommodate the larger wires. IMPORTANT NOTE: sure to make sure both prongs are firmly down on the wire. A few times with the brand new dishes, they have been only part way on and have (SPROING!!!) popped off the wire on one or both sides throwing kibble or water all over, LOL. These are very inexpensive (less than $2 for the most part, and sometimes even less when on sale). That means I can have a few backups to wash in between feedings, etc. I also use these when I have an animal in their traveling crates (like the plastic hard-sided kennels by Vari-crate) for a trip for food or water. Sometimes when I knew the dogs would be in their crates during the day for some reason, I also put these dishes in for making sure they have water. I have not found another dish that is so inexpensive and easy to use. These are also small, so they are great for my smaller dogs and for cats, or when you don't want to take up a lot of space inside the crate. For bigger dogs or cats, another model may be better.

Pros: fits easy on to dog crates or hard sided pet carriers

Cons: sometimes hard to get on wire at first, can pop off if not securely on wire

These work great in travel crates. In fact, the airlines require them in crates when you fly your pet somewhere, as they can pour food and water straight through the door into these cups (which clip right to the door) without having to open the crate and risk losing your pet. They're a little small, but they get the job done.

Pros: Works great in travel crates.

Cons: Non found.

These are actually better for food than water if you have rodents! They splash water everywhere with these. I like the bottles better!

Pros: good for food

Cons: not good for water

This little water cup snaps into place easily on the door of your crate. An another and put food in it. No more bowls inside the crate and no more messes. Small for very large animals, but great for cats and small to medium dogs.

Pros: Easy to use

Cons: Small for food use

I use these when traveling with my animals that are in crates. I freeze the water the night before so that it doesn't spill everywhere and it works great.

Pros: great for travel

Cons: none