Not sure if these are exactly the same, but we use this style at our cage-free cat adoption site. While we don't lock any cats in cages or crates, we have a large wire kennel in each room where we can create a quiet place for some cats, plus these bowls hang wonderfully from the cage, keeping the food off the floor (as required for the facility). Can be placed at differing heights depending on the age and size of the cats in each room.
Easy to clean and sanitary.

Pros: none

Cons: none

Stainless steel is always a great choice for eating utensils. These bowls look like the ones that we use at our animal shelter. They can be easily removed from their holder for refilling and cleaning. They can be attached to the cage thus preventing them from being turned over.

Pros: Easy to clean and durable

Cons: None

I never had a problem with this dish. It is very easy to clean and smaller birds sit right on the edge to get the food or water.

Pros: n/a

Cons: n/a

This is a very strong durable pan. It is hard for the animals to knock it off the side of the cage. It is very easy to clean and nothing can stain it. Like it for many different reasons

Pros: strong

Cons: na

This looks like the dishes used at the shelter. They can be hung on crate as low or as high as you need and because they are attached to crate they are not on floor and do not get tipped. Easy to remove, clean and put back. Very durable.

Pros: excellent durability, can be positioned as high or low as needed

Cons: none