a huge roaring sound of some kind of animal sounding much bigger than a lion ..

it was 1980  not sure which month as it was over 24 yrs ago, it was  closing time at a pub called the boat in minworth birmingham, me and my friend was walking home back to castle vale in fog so thick we could barley see eachother . on our right there were houses on our left there were fields , we saw no ufo`s but what  happend next was the wierdest thing more wierd than any ufo and i know noone will beleive this but i dont care cause this did happen. we were young 17/18 yrs old at the time not drunk, or anything , and a almighty roaring sound of some kind of animal came from the direction of the fields , it was so loud i could feel it going through my chest like standing next to big bass bins of a dj , the sound was boucing back from the houses , we looked at eachother but both of us was to frighted to speak , cause it sounded so close it would here us what ever it was. people came out of there houses to see what it was , the roaring sound lasted 30 seconds or so and was 100 times louder than any lion and sounded 100 times bigger than any lion ive heard at zoo`s , it roared again people from the houses were asking us what is it , all i wanted to do was walk as fast and as quietly as possible , even the people from the house dident want to talk to loud it sounded so close , me and my friend felt like if we ran it would hear us so we just walked on our toes . the next morning , i got up for work and it was on the  local radio news brmb , lots of people heard it and reported it to the police , it was heard as far away as erdington 3 to 4 miles away.ive seen that friend of mine a couple of years ago and asked him if he remembers that night in the fog , and he imeadatly replied the night with the roaring sound .im not asking anyone who reads this to believe it or not im just stating a fact that actually happend that night