James Yeates. the RSPCA's Chief Veterinary Officer. said the economic crisis has caused "additional problems for animals". He said:
There remains a body, even in this country where people really love animals, who think it's acceptable to beat, to maim, to fight, to neglect, to just not give the love and attention, or enjoy being cruel to these animals.
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His mother Princess Diana was killed in a car crash in Paris in 1997 when he was just 12 and his brother William was 15.
The 21-year-old, who was arrested on Sunday, also allegedly injured two other people in the attack in the German city of Reutlingen.
She was going to the aid of a family member who got out of the car in the middle of the park and was dragged away by a different tiger.