I am a pocket gopher expert of more than 55 years. That is in fact a pocket gopher. They live in massive underground colonies that never hibernate and continually inbreed. Reproduction is like the possum; gestation is 13 days, from birth to sexual maturity another 17 days. The first litter is 4, every litter afterwards is 6. Females will throw 3 litters all females, the following will have 1 male. They grow exponentially by 6, so one pregnant female can leave the nest in your HOA’s property, tunnel under the wall or along the pipes into your yard and in a few months have produced over a thousand offspring. This is why I’m immediately trapping and killing them at the first signs is so important. Removing the dirt mounds only allows them to live undetected until the population is so extreme that they must come aboveground to locate new den areas; pools, homes, trees, sidewalks, etc. the worst thing landscapers do is remove that soil and allow them to produce more generations.
No other rodentia mound, plug and seal their tunnel systems. The Geomyidea have many varieties but that appears to be a Botta, maybe a Townsend assuming you’re in California. Those tend to be smaller than ours in Arizona, which a typical adult female is the size of a size 14 shoe. All other species are open hole and short burrowed rodentia.
If you see mounding near sewer cleanouts, most likely, there is a female under the bathtub. This female was foraging and having easy access to food for her new pups.
This young female was rescued from a young man that was torturing her with his snake. She went to live out on my ranch miles from any city.
This female does have eyes, just as moles and shrews do. Those two latter rodents have small eyes that are protected by thick fur to keep the dirt out. If you look closely, there are pockets on each side of the face. They are fur lined and able to stretch to carry food, dirt, pups, rocks, trinkets, even to remove poisons and baits from their tunnels and expel above ground. Their claws are designed to dig through the hardest soils like our caliche. The palm has an extra pad that looks more like two thumbs for pushing and moving soil and debris. The teeth are stained yellow and orange from the iron in the soil. These teeth move independently to slice through branches, even chip away concrete. Being bit by these aggressive rodents isn’t fun, as they have no problem biting through a finger and the bone, once the lock down, they usually Wont let go, you’ll have to kill them by striking or a sharp object like a shovel.
Pocket gophers are strict Herbivores which means you’ll have more luck getting a manatee to eat a Ford truck than getting a pocket gophers to eat poisons and baits. There is no nutritional value, they must eat live plants. Unfortunately, when they follow sewer, water and gas pipes into homes and create dens, they also bring in the dirt and plant material that can cause mold and help produce a dangerous situation with diseases, parasites and fleas. These cavities and tunnels are why no one should use poisonous, explosive or deadly gas, when it comes to gophers. The tunnels intersect for miles and carbon monoxide for one is odorless, the smallest beings inside will be injured or killed first. If you have gophers, trapping is the only true method.
Not many have the experience of an old trapper but the traps we use are made by Victor and they’re called EasySet Gopher Traps. I make no money by recommending them either. I have RA and they’re easy to set VS the others that aren’t or hold an odor. Instructions are on the packages, just follow them, be patient, don’t keep checking on them, just leave them alone for 4-5 days and your odds increase.