The Type dimension of Laboratory Mouse segmentation distinguishes four principal sub‑categories: Inbred, Outbred, Transgenic, and Knockout strains. Inbred mice, derived from more than 20 generations of sibling mating, provide a genetically uniform baseline and dominate the market share because they are the default model for reproducibility studies, accounting for roughly 40 % of total unit sales. Outbred strains retain heterozygosity, offering phenotypic variability useful for pharmacokinetic profiling; they contribute about 25 % of revenue, reflecting demand from early‑stage drug‑screening programs. Transgenic mice, engineered to express foreign genes, support functional genomics and disease‑modeling research; their premium pricing and specialized applications generate approximately 20 % of market value. Finally, Knockout mice, where specific genes are deactivated, are essential for target validation and comprise the remaining 15 % of the market, driven by high‑throughput CRISPR workflows. Collectively, these type segments define the supply chain, pricing structure, and growth dynamics of the overall Laboratory Mouse market.