Some more bloopers:-
In the first episode when Ron is showing Dora all the horses around, after Charley they both go into the next horse's box. Ron says that they have to be careful because she is pregnant.
Later on that episode, the Colonel asks Dora if she has seen "Lindy Lou the grey mare"
Dora replies "The one that was pregnant? Yes".
The horse we met earlier was black, not grey.
Also, the one that played Folly's mum, Lindy Lou in the later episodes as well as being a different colour, was much smaller (it was a pony) and stockier than this one.
In "One White Foot Charley", Steve gets down from his bed and goes into the stable, and takes the rug off the horse (we see him doing it). The next scene the horse has his rug back on.
Also, Dora is given her reason for being up so early (just shortly after we see him take off the rug) is because of the foal. The foal is referred to as a "she" yet Folly is a he. Also in this case the foal isnt Folly (different colouring), but in all other respect the mum of this foal is the same as Folly's mum, so presumably it is supposed to be Folly. (Also, they dont mention any other foal or horse with foal in the series at the yard.)
Also in the same episode, Charley's age is given as 30, yet in the episodes "Steve" and "Dora" his age is given as 35.
I somehow, get the impression, given the state of the film used in the first place and the bloopers that Follyfoot was put together rather hurriedly.