Animal waste-derived biochar, a natural product, can be used in a wide range of agricultural and biological strata for sustainable environmental management. It represents a promising method to enhance environmental fitness by potential ways of waste reduction, greenhouse gas mitigation, land reclamation, arresting of toxic chemicals from soil-plant system, etc. This article has sumptuously discussed animal waste biochar sources, significant preparative processes, biochar characteristics, parameters regulating biochar quality, application and impacts on soil properties, soil-plant nutrients, plant growth and yield, waste water treatment, waste management, etc., through a massive literature review. Biochar derived from various animal wastes suggests distinct advantages, high nutrient content (N, P, K), and varied chemical compositions that cater to the particular requirements of soils. Applying an ideal pyrolysis temperature for precise feedstock can improve the effectiveness of biochar while also decreasing the toxic substance of its raw ingredients. Being discussed the chemistry, application, and pros and cons of animal-origin biochar at a single platform will help future researchers for finding the optimum features for best output.