Ticks are so small that it's easy to miss when they bite. But they're worth making a big deal over, experts say, because ...

Tick bites are usually harmless ... “The symptoms of Lyme disease in dogs include lameness, swollen lymph nodes, lethargy, ...

Brown dog tick. Image by Kpixmining via Depositphotos ... This stage begins 1-3 weeks after the tick bite. Symptoms include fever, swollen lymph nodes, lethargy, and loss of appetite.