Our shelter needs this to hold back aggressive feral cats while we remove litter boxes and food/water bowls from their cages. While it's not as sturdy as our older, heavier dividers and has fewer "tines," it is much more flexible and easier to quickly slide in and out of cages. This dividers works with larger cats, but would not be advisable for smaller cats, which could easily push through the space between the tines. However, because it IS so flexible and much easier to use than the older dividers, we are considering purchasing a second one, which we could just stagger aside the first to be sure smaller cats could not attack while we clean.