WOOF! - The Complete Series 6 - 2DVD set [Digitally Remastered]:

Rex felt a curious tingling in his hands and feet. He felt his nose becoming cold and wet, his ears becoming flappy. The thought in his mind was: 'I'm turning into a dog!' Rex is a perfectly ordinary boy. Perfectly ordinary that is, until the night when, in fifteen seconds flat, he turns into a dog! Rex and his best friend Michael are determined to sniff out the truth - what makes an ordinary boy suddenly go 'woof'?

Classic light hearted childrens drama  from 1993              

CAST:

Liza Goddard ... Mrs. Jessop
Adam Roper ... Rex Thomas
Owen Brenman ... Mr. Thomas
Lionel Jeffries ... Grandad
Monty Allan ... Michael Tully
Damien Banks ... Brian Hobson

Guest Stars:  Anita Dobson (EastEnders), Stephen Fry (QI), Paul Shane (Hi-Di-Hi),
Barbara Lott (Sorry), Hugo Speer (The Full Monty).