Originally Adam communicated with the animals that way and many others. Since Adam sinned, it is very hard to do without getting involved thinking that it is some type of unknown power, and that makes it occult. This is a sin for Christians because of the temptation to do it by "unknown power" rather than by the gift of God. Satan will be happy to take that desire for unknown power, and let you know it's him doing it, and that will pull you away from God. If it feels like you do not know why it works, don't do it. If it feels like it is just happening, don't worry about it.