Since when was hunting rabbits illegal? Guns, traps, snares, gas and the use of dogs are all perfectly legal! These should be carried out by landowners or nominated persons under section 1 of the pests act 1954. Time for the so called charity to get it's just deserts on this one! If it had happened to my dog I would move hell and high water to make sure they pay for it not just In monetary terms either! There's a few folks there that need their p45s and a criminal record! Best of luck getting it sorted.