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.
The main concern associated with tick bites is Lymeâs disease. There is an indicator rash that appears with a tick bite which may carry Lymeâs disease which is larger than 2 inches across, and looks like a bullâs eye. The indicator rash occurs in about 75% of cases or people infected with Lyme disease.