Over the course of their lifespan, pet gates will take a lot of hammering. Excited dogs, children and even adults tend to lean on or bump into pet gates often. If you have excitable pets or children, you need to be sure you make a good choice in material to maximize the life of your pet gate.
Hardwoods are the best among wooden pet gates due to their strength and natural resistance to humidity, water and temperature changes. Hardwood fences are sure to stand up to the casual beatings taken by most pet gates.
Due to their **water-resistance **hardwood pet gates tend to do well outdoors, so long as the weather is not persistently wet for long periods of time. Hardwood gates hold up slightly better against chewing than manufactured wood gates, but if your puppies are teething, metal is probably the best choice.
Manufactured wood gates can be significantly cheaper than hardwood gates and offer similar levels of durability in most ways. Manufactured woods do not stand up as well against water and humidity, so their use is best relegated to indoors, or outdoors only when weather is stable. Manufactured woods also tend to do worse against chewing, so they are not recommended for teething dogs.
Steel pet gates offer the absolute best as regards strength and durability. You'll never have to worry about your pets chewing through it and are unlikely to have an issue with pets knocking them over or straining them. Steel gates are typically finished in weatherproof paint, so outdoor weather won't be a problem for their use, especially if you have them re-finished regularly.
Pet gates can vary between manufacturers as regards size. Some gates are as short as 20 inches and designed for smaller pets, whereas some are as high as 36 inches or more and intended for "extra tall" pets like large dogs.
You will want your pet gate to be high enough that it's at the least challenging for your pet to jump over, for most dogs, a gate about 1.5 times as tall as they are is enough of a challenge. This may not apply to very athletic cats and some training may be required to make pet gates effective for our feline friends.