I loved this cartoon! Each week the stressed out head keeper of the Wonderland Zoo (Mr Peevley)and his lardy sidekick would be chasing an invisible motorbike ridden by three bears...lol.
There was an afroed hippy bear in a fringed waistcoat, a bear in a Bing Crosby fishing hat who always reminded me of Ringo Starr and a little fat one too and each week they would go A.W.O.L. from their cave on the bike and the rangers would freak out.
The 'chorus' bit of the theme tune was something like "Oooh...Oooh....Here come the bears". Lol.