An appendage growing from the stem of a plant. Leaves are extremely variable in form and function according to species. For example, the needles of pine trees, the spines of cacti, and the bright red parts of the poinsettia plant are all leaves modified for different purposes.
Take her temperature daily as her expected delivery date approaches. Normally a dog's temperature is between 101 and 102 degrees. When your pregnant dog's temperature drops below 100 degrees, that's an indication she'll have her puppies within 24 hours. Once labor begins, it can last up to 12 hours. If your dog's temperature drops significantly, she's ready to give birth soon.
Dogs with narrow heads, such as shelties, often deliver pups less than 30 minutes apart. Just like humans, every canine birth is unique and the time between puppies will vary based on various things. While one dog may sail through delivering five puppies, another may take over 24 hours to deliver the same size litter.