Orchids are not poisonous to humans, dogs, cats or horses. The orchid is officially known as the Phalaenopsis orchid and also goes by the names of moth orchid and moon orchid. While orchids are considered a safe and nontoxic plant, it is possible for reactions to still occur if a person is particularly sensitive.
Many common household plants are actually poisonous to people and pets, so it is important for anyone considering adding houseplants to a residence to note which plants are safe and which are not. Poisonous plants include, but are not limited to, azaleas, daffodils, English ivy and even the popular holiday favorite, mistletoe.