Researchers for the first time comprehensively describe existing abnormalities in brain function and structure of long-term marijuana users with multiple magnetic resonance imaging (MRI) techniques. Marijuana. The effects of chronic marijuana use on the brain may depend on age of first use and duration of use. The effects of chronic marijuana use on the brain may depend on age of first use and duration of use, according to researchers at the Center for BrainHealth at The University of Texas at Dallas.
Feeding: The Adult German Shepherd Dog. The adult shepherd will eat approximately 40 pounds of dry dog food per month. Naturally, this will vary depending on the metabolism of each individual animal and it's activity level. Because dogs are born carnivores, many people supplement their dogs diet with meat protein, at least a few times per week.
Most lines of GSD's will live to between 10-12 years of age. 11-12 years is probably a very reasonable expectation. A GSD becomes middle-aged between 6-8 years old, and is generally considered geriatric at about 10. Their food intake and exercise and nutrition needs may change over this period of time.