Ranches/Farms to take photos at?

Hey y'all!

I'm a teacher and I have students that are going to be entering our local Rodeo Art show this year (at the district level before they potentially get shown at the actual Livestock Show and Rodeo at NRG).

Multiple of my students work really well from photo references, but the competition rules state they have to use either their own photos or ones that I take as a primary source. I would love to take pictures of horses, western gear, farm animals, etc. for them to use, but I have no idea where to start!

Do you guys have any suggestions for places in the Houston area I could do this? I know I'd likely need to call and ask in advance, so anything helps!