A look at an old horse losing weight and a new drought affected horse putting on weight Part I

The vet is coming out to check both horses. The new girl is having her feet trimmed in a couple days.
Penny the black girl, is losing weight. She also has a skin condition I cannot clear up. The vet will come and do her teeth and give her a check up. She is 28 years old.
Note the sassy pale palomino giving me stick at the end and the tail swish. Not long after this video we had a session until she stood and faced me respectfully. It took about ten minutes. She needed to know I'm the lead in this herd. She's a good girl and coming along nicely.
Need to check if she's pregnant, as she was running with a stallion before I bought her. Then will act accordingly, as she has ticks and I don't want to use any products on her if she's pregnant, I want to get advice from the vet.

Part II https://youtu.be/0IOww_gNoX8