All are blood sucking depending on blood for food. Once fed, nymphs will grow and molt to adults. Some species of adults need to get another meal or two before they are able to breed and lay eggs. Although there are many species named after specific animals, most ticks are able to feed on just about any animal which has blood. In other words, brown dog ticks can feed on people.
Deer ticks can feed on dogs.
Bat ticks love rats. The point is that they will take advantage of whatever food supply is readily available so be aware that any infestation of this family of pests is not acceptable . Ticks are broken down to two main types. These are referred to as either Hard or Soft ticks. Hard ticks, as the name implies, have a body which resembles a seed.