If you expect them to eat 1/4 pound each, divide 25 by 4 (allowing a little extra for hungry fellows). If you think you'd better allow 1/2 pound per person, divide 25 by 2.
I would make about 12 pounds of ground beef
It depends on what else will be served. For 350 tacos I would use approximately 60lbs of ground beef.
7tonnes
As much as you can fit!!!, no really about a 1/8 of a cup
Allow for about 2 ounces of shredded chicken meat per taco and two taco's per guest. That translates to 25 lbs of pre cooked meat. Always make a small reserve extra for a hungry crowd and allow for wastage and spills. 100 people = approx. 30 lbs of shredded chicken meat.
About 50 pounds!
12-20 depending on how much meat you like
Pretty much any standard meat that you would feed to a gerbil. Stay away from fish meat.
Unless you are planning on cooking it, i wouldn't feed a dog raw meat.
I can usually get about 12 tacos from a pound of ground beef. More or less can be made depending on how much meat you put in each tortilla.
5lbs of meat
80 pounds