Yeah, hard to tell. I had three boys, all gelded, two looked like that, one was even bigger!! Everyone thought he was due any day!! He came to me that way and was just the product of someone loving him too much, which is easy to do with donkeys as they are easy keepers and put on weight easily. Plus, with their winter coats, they look even heavier than normal. I would keep watch, see if they get bigger and watch to see if they bag up. Then you will know for sure.
hm... they look pregnant, but that doesn't necessarily mean they are. Most, [smaller] equines tend to get pleasantly plump... Normally if a mare (horse) is showing like that, you should be able to pick up on certain things, such as she not having a heat cycle in a while, teats becoming tender and "swollen," changes in behavior, feel movement of the fetus....etc. I'd imagine donkey's would be the same... Do you know if they were in with or potentially covered by a Jack? I would definitely call a vet out to ultrasound or at least give them a good check up - if they are pregnant, normally different feed is suggested that is higher in protein, calcium, and overall nutrition (such as better quality hay - alfalfa mixture).
Donkeys usually have a bit of a pot belly. I've actually been wondering the same thing about my goat! It IS hard to tell. They are ADORABLE though
I vote "yes", but I may not be a good person to ask. You would not beleive how many we thought were prego, thought they might kid, locked them in a stall, only to finally decide they were not prego. Given time, you will know I hope so!
You can also have your vet check for you. They may use different methods depending on when you think they were bred.
