No, this really isn’t off topic.
The Natural History Museum of Los Angeles County has a good website with good materials. On the way to find something else (just what I don’t remember) I found a discussion of the evolution of dogs, and artificial selection in dog breeding.
Homeschoolers, you just got a puppy, and the kids are all about learning everything they can about dogs. Here’s a page to sneak in some serious biology on evolution and how it works. Your kids will be reminded of it every time they see a different dog.
Elementary school biology courses can be supplemented with information about how natural selection works to provide the wild dogs native to your area — coyotes for the western U.S., for example (which can lead to a wonderful discussion of how coyotes have spread to all 50 states from the west in just the past 30 years, and how and why that happened).
High school biology students can be directed to this site for supplemental information that I can all but guarantee is not in the textbook — about dogs, an animal that most students will know first-hand.
I had expected that there might be a good, on-line version of exhibits on La Brea Tarpit fossils, but it’s not there. There are a few links on archaeological information, however. The museum seems solid in early Latin American cultures, material that is probably quite useful for junior high and middle school history courses in California, Arizona, New Mexico and Texas, and probably Nevada, Utah and Colorado, too.
If you have a local museum with good on-line resources, please drop a line and let me know — edarrell(at)sbcglobal-dot-net.