As an inquisitive, high energy pup, your English springer spaniel may be wearing you out. Understanding how quickly your springer spaniel will grow may help you cope with his frisky growing phase. Every dog is different, but if your springer spaniel is like most of his breed, he'll reach adulthood by 18 months.
Changes Seen and Unseen
There's no hard and fast rule about how quickly a springer spaniel will grow. Health, diet and heredity impact every dog's growth rate. At his adult height, your dog will stand around 20 inches tall at the shoulder and weigh about 50 pounds, meaning he's considered a medium-sized dog. According to WebMD, smaller breed dogs tend to grow quickly and live longer, while large and giant breed dogs take longer to mature and have a shorter life expectancy. The English Springer Spaniel Club recommends a feeding schedule based on maturation at 18 months old. Along the way, he'll experience the same milestones most dogs do. He'll probably lose his puppy teeth around 3 months old, about the same time his immune system has developed and he's gaining bladder control. His adult teeth will begin to break through around 4 months old, when his motor skills have become more refined. As he grows, you'll notice he's gaining muscle mass and height as his bones gradually harden and growth plates close. Your vet can monitor your pup's growth to ensure he's not growing too quickly -- which can lead to bone development problems -- and that he's getting the nutrition he needs during this critical evolution.