Neural avalanches, characterized by cascading bursts of activity propagating across neural networks, are emerging as a fundamental phenomenon in brain function and development. This article explores the intricate relationship between neural avalanches and their role in optimizing neurodynamics, network formation, and information processing in the brain.Drawing from recent research findings, I delve into the criticality exhibited by neural avalanches, which put the brain at an optimal state for efficient information transmission and computational capabilities. The article examines how neural avalanches facilitate the formation of efficient neural networks through a process called "neuronal avalanche organizing" (NAO), where neurons participating in the same avalanches tend to wire together, leading to the emergence of functional neural circuits.Furthermore, I discuss the importance of moderate levels of D1 dopamine receptor activation in supporting avalanche dynamics. Appropriate D1 receptor activation helps maintain the balance between excitation and inhibition, regulating neural excitability and gain modulation, and contributing to synaptic plasticity mechanisms underlying network reorganization.Extending beyond neurodynamics and network formation, the article explores the pivotal role of neural avalanches in brain development. I try to elucidate how avalanche dynamics shape neural circuit formation, synaptic pruning, and refinement, as well as facilitate critical period plasticity and functional specialization of brain regions. Additionally, I highlight the contribution of neural avalanches to network integration and the emergence of higher cognitive functions and complex behaviors during development.By synthesizing current understanding and ongoing research, this article provides a comprehensive perspective on the intricate interplay between neural avalanches, neurodynamics, network formation, and brain development. It underscores the significance of this phenomenon in optimizing information processing, shaping neural architecture, and guiding the maturation of the brain's intricate circuitry.Word highlights: Neural avalanches, Criticality , Neurodynamics