We planted some cat grass a couple of weeks ago and Millie has been eating quite a lot of it. She has just climbed up on the tv cabinet and thrown up all over it, bless her. There are loads of long blades of cat grass in it. Can it make them sick if they eat too much or was it likely to be a long blade of it irritating her throat? She hasn't been sick since she has been with us up until just now.