[Sancho Panther]

I remember seeing a brilliantly funny Argentine film donkey's years ago, it was about a pleasant chap who loses his job, I think. He helps a lady whose car has broken down, does some welding I think. She can't afford to repay him so she offers him a huge dog which she insists is a potential pedigree champion. After many hilariousl adventures the dog does eventually become Argentine national champion, and earns thousands in stud kennel breeding fees.

As I recall the chap is a lonely widower and he also meets an attractive new lady friend, so it's a happy ending all round!

Somebody will know it, I'm sure!