The HeartStart MRx is for use for the termination of ventricular tachycardia and ventricular. fibrillation. The device is for use by qualified medical personnel trained in the operation of the device and qualified. by training in basic life support, advanced cardiac support, or defibrillation. It must be used by or on.
The following is a rough breakdown of the stages of canine life: 1  Puppyhood ends between six and 18 months of age. 2  Adolescence starts between six and 18 months of age. 3  Adulthood starts between 12 months and three years of age. 4  The senior years begin between six and 10 years of age.
The minimum age for a SMALL dog to whelp(have pups) is 2 years(this is the safe age, although some small dogs get away with having puppies at 1-1 1/2 years of age) and 3 for bigger dogs because they muture later, some bigger dogs still not having their first season till 2 years.