I have two dogs. The male has bad hips and limps around and gets "special" treatments because of his disability like being carried or lifted places, and I massage his hip muscles when I can. I try to treat my female equally, (she gets peanut butter when I give him some for medicine and she gets pets after his massage) but she doesn't need to be carried or lifted onto the couch and bed.

I have noticed my female get's irritated when she does not get the same treatment as the male. Recently she has started limping, and after watching her I noticed she switches feet like a child trying to fake it.

Do dogs have the mental capacity to understand why one receives special treatment and fake an injury to get the same?

also I forgot to mention that he grows very attached and seems to have chosen me as his guardian. I'm really worried he won't do well when taken away, especially if he stays much longer.

I started fostering a dog a few weeks ago never having done so before but I am having problems. He is very dog friendly and so are my two, but for some reason one of mine and the foster seems to hate each other. It is getting very frustrating having to keep them separate and I feel I am not giving the foster as much love and training as he needs. Also, the rescue I am fostering through is hardly any help. I sent them his bio and pictures which they posted on their site, but nowhere else. They seem to just get foster parents and dump the dog. I have no idea how to find him a home, so this is very frustrating especially since he is a very adoptable guy. Guess I'm asking for -tips on how to get dogs to like each other -tips to advertise your foster -tips to interact with the rescue (if its okay to ask them to post about him) -how long a fostering is normally

Probably because they are warm and comfy and can be moved around for optimum comfort.

I am having the same problem. Trying to share to Facebook and it picked a random photo I don't even have on my rover account anymore.

Growing up my dog had seizures all the time. Of course I would definitely call a vet and describe the incident in detail and see what they say. Most small companies are happy to answer questions on the phone. I can try and help though. If it was a seizure he (as I am aware) would have fallen over, been very stiff while shaking, look terrified like stuck in another body, and the breathing is like their lungs won't move, not heavy panting. They also typically defecate and urinate. Also after the incident they become very clingy and a little out of it. If not it could possibly have been a bad muscle spasm of exhaustion if having exercised recently.
Again this is just my experience. Hope he feels better!