An environmental cause can include a drug, alcohol or a disease the mother has that can increase the chance for the baby to be born with a birth defect. An agent that can cause a birth defect is known as a teratogen. Multifactorial birth defects are caused by a combination of genes and environmental exposures.
National Rescues. Lyme Disease May Cause Sudden Aggression in Dogs Written by Betsy Sommers of. Peppertree Rescue, Albany, NY, USA. 28th May 2004: We recently had a very strange event that I think we should share around the rescue community. A Young (~2 years) Lab mix, male, came into our program with a questionable background.
Some early signs and symptoms of Lyme disease may include: 1  A characteristic bulls-eye rash that spreads from the site of the bite. 2  Fever, chills. 3  Headache. 4  Fatigue.5  Muscle and joint aches.6  Swollen lymph nodes.ome early signs and symptoms of Lyme disease may include: 1  A characteristic bulls-eye rash that spreads from the site of the bite. 2  Fever, chills. 3  Headache. 4  Fatigue.