This is the Devil’s Tongue Barrel Cactus that we bought in California a long time ago. We had it in a pot out there and transplanted it into the rock and cactus garden shortly after bringing it to Arizona.
It had two flowers open today, which is nice, since the local desert critters think the flower buds are tasty and tend to eat them (see the bud between the two flowers) before they can open. The cactus has natural defenses with all the sharp spikes and rigid “tongues” that abound, but the critters get to the buds, somehow.
I have the same problem with the golden barrel that is planted nearby. We recently took the chicken wire fences away, since the cacti were getting pretty big. We will just have to deal with not having as many flowers, but, as you can see, some of them make it and are pollinated anyway.