Last night Otto was barking at something while inside the house. This isn't unusual, but what was unusual was that he didn't run out into the backyard to bark. I was trying to get to sleep early in order to deal with 4 a.m. irrigation, and he came upstairs and continued to bark. Kat went outside to see if there was an animal outside (such as a cat that spends a lot of time in our front yard), and heard a dog barking nearby that was too close to be one of the neighbor dogs.
She got a flashlight and went out to find a dog trapped in the Highline Canal, struggling to get out, but the sides were too steep. The dog's front paws were bloody from the effort. She managed to get a leash around its neck to try to pull him out, but he resisted. She called the Arizona Humane Society to get someone to come take him (and help get him out if we were unable to manage it)--since he's an injured dog, this was a case they are permitted to deal with. (If a stray dog is over 6 months old and uninjured, Maricopa County Animal Care & Control is the only entity legally permitted to take them.)
I went and got a ladder and put it into the water to see if he could use it to pull himself up, but he just used it to hold himself in place.
When the Arizona Humane Society arrived, they had a dog snare which, combined with the leash, we were able to use to pull the dog to safety. He was dried off and willingly jumped into the kennel on the truck.
The dog had a collar, but no tags. Kat will be putting his photo up on Pets911 this morning.
Thanks to Otto's barking, this dog avoided the fate of another whose skeleton was pulled out of the canal by our house, in the same location, earlier this year.