Possible Clues:

• Like a fox
• Foxlike
• Relating to foxes
• Fox-like
• Cunning as a fox — liven up (anag)
• Things such as this are heated, in a manner of speaking
• Get to the tree at last and that's the way to fox them
• Cunning Lulu getting up half hidden against tree
• Resembling a fox
• Liven up in fox-like way