Ticks

Although ticks are commonly thought of as insects, they are actually arachnids like scorpions, spiders and mites. All members of this group have four pairs of legs as adults and have no antennae. Ticks are among the most efficient carriers of disease because they attach firmly when sucking blood, feed slowly and may go unnoticed for a considerable time while feeding. The Ixodes tick, also called the Blacklegged Tick or Deer Tick, is the tick vector for human and canine Lyme disease.

Lyme disease
has been
found in 48
contiguous
states
The threat of Lyme disease is probably greater in dogs than in humans
Dogs will often show no signs of Lyme disease
case study 1
case study 2