Cute pup!
Squatting while peeing is what female dogs do, but males do it sometimes, usually when not marking territory.
The dog appears to have a darker saddle type of marking on its back. That, plus the floppy ears and the long face say some sort of hound to me. I can make a better determination with the answers to some questions:
1) Is the short hair rough, almost like the dog's had a crewcut, or is it soft?
2) Does the dog ever point its ears upwards, more than, say, a few seconds?
3) Does the tail curl at the end? Not the hair, the tail itself, does it fold over itself?
4) About how tall is the dog, while standing, at the shoulder?
5) About how much does it seem to weigh? For the purposes of scale, German Shepherds tend to be between 70 and 90 pounds (males are larger) and Dalmatians tend to be between about 60 and 80 pounds. Again, the males are larger. Very large dogs like St. Bernards are over 100 pounds but I'm quite sure this is not a giant breed or a mongrel with any giant breed(s) in him/her.
6) What gender is the dog?
7) Are the feet large in proportion to its size? Is anything else out of proportion, e.g. the legs too short, that sort of thing?
8) Does the dog bark a lot? By a lot I mean, long barking jags or howling.
9) Does the dog seem to have a strong prey drive, e. g. does it chase a ball all day? Does it chase squirrels or other small animals?
10) Eek, that's a lot of questions. There is no question #10.