Your mom has to handle this herself. She has to tell him to make different arrangements for the dogs. If your brother can afford to leave town over the holidays, then he can afford to leave the dogs in a kennel.
How did your mom go from cast-away mom to dogsitter on demand?
Your brother lacks compassion. He is treating your mom as a doormat at Christmas. He is selfish and has no respect for your mom.
Your mom should let him know she is not interested in being penned up for days in a house with dogs and a pooper scooper during the holiday season.
Is that how a loving son treats his mother? Why isn't he taking his mom on the trip with him so he can show her a good time and they can all enjoy the Holiday Season together?
A friend of mine asked me to take care of her dog for a few weeks
while she recuperates from hip surgery. And she is not a close friend. She calls me maybe once a month, and if I go to her house she rarely offers me a cup of coffee.
She is not a giver, she is a taker. And she has the money to kennel her dog.
I do not want a dog in my house and neither do my cats. I have a life with a busy schedule that does not include picking up poop in my yard and cleaning dog urine out of my new carpets. I don't run a free kennel. I was not put on this earth to serve other peoples interests on a whim.
She has numerous relatives she entertains weekly. So I suggested she place her dog with one of them. She said she "didn't want to take advantage of her relatives."
But "taking advantage" of me is OK. LOL
Consciously or unconsciously we all strive to make the kind of a world we like.
~Oliver Wendell Holmes~