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www.reference.com/article/life-cycle-dog-a56d86383978387a

A dog's life cycle begins at puppyhood and spans an average of 12 years, although some dogs live considerably longer. The female dog generally become sexually mature by age one and can begin reproducing after that time if not spayed.

www.reference.com/science/human-life-cycle-2828d4f916244b27

The human life cycle begins at fertilization, then birth, and progresses through infancy, childhood, puberty, adulthood and aging, ending in death. Every stage is unique and encompasses changes in the human body.

www.reference.com/article/life-cycle-cat-b7e9f841ef0f1f5f

Kittens are heavily reliant on the mother for the first few weeks after they're born, and they cannot see or hear. They learn to walk at three weeks, and learn to respond to other cats. They have full coordination at seven weeks, and can become fully independent by 12 w...

www.reference.com/science/life-cycle-bacteria-abdde3c8a6636153

The life cycle of bacteria consists of four main phases: the lag phase, the exponential or log phase, the stationary phase and the death phase. Factors that trigger bacteria growth heavily rely on this life cycle. Bacteria multiply through a process known as binary fiss...

www.reference.com/pets-animals/life-cycle-fly-abb23752199005a8

The life cycle of a fly includes an egg, larva, pupa and adult. A fly completes its life cycle in 1 week to 2 months, depending on environmental conditions.

www.reference.com/article/trade-life-cycle-5b7a2f40b6265457

The trade life cycle is the course of events that contribute to the introduction of a new product, then follow its growth in the market and its decline and departure from the market. A trade cycle comprises two main periods: a period of good trade where a product attrac...

www.reference.com/pets-animals/life-cycle-snake-75288c2421e4b11c

Seventy percent of snakes begin their lives growing inside of eggs, while the other 30 percent are born live. Some mothers leave, while others stay with their eggs until they hatch. This process is called brooding.