At What Age Do German Shepherd Ears Stand Up Straight? When your puppy is finished teething (around week 20), his ears should start to stick up or should be all the way up. Why does it take five months for this to occur? As a puppy, the GSD's cartilage is not strong enough and cannot hold up the weight of his big ears. But as he grows and gets the right nutrition, he develops stronger cartilage.
The Mayo Clinic warns that people who drink more than four cups of coffee a day may feel a range of side effects, including insomnia, nervousness, restlessness, irritability, stomach upset, fast heartbeat and muscle tremors. How sensitive you are to caffeine depends on a number of factors.
High lithium levels can cause shakiness, muscle weakness, slurred speech, nausea or vomiting, and drowsiness.  Keep your caffeine intake about the same. Keep amounts of coffee, tea, cola, and other soft drinks with caffeine about the same from day to day. Less caffeine can cause your lithium level to increase; more caffeine can cause your lithium level to decrease. Avoid caffeine because the effect of these drugs may be changed if taken within 40 minutes of caffeine.