Animal PsychAromatica Level 2 UK, Gloucester and Somerset. Views of the week long course in how to use essential oils for dogs, horses, cats and in this case cows! This is the second part of the certificate course and as you can see is very hands-on and a lot of fun. Among the participants were two aromatherapists, a vet nurse, two or three Reiki healers (or more?) so it was a sensitive and well-educated group and the animals volunteered themselves happily to help us learn.