Difference between rat and mouse

1. DIFFERENCE BETWEEN RAT AND MOUSE BY BAJGIRE KRUSHNA BALIRAM NIPER MOHALI

2. Parameter Rat Mouse Romans call it Mus maximus Mus minimus Genetic Differences rats have 21 chromosome pairs & 2.6 million base pairs mice have 20 chromosome pairs & 2.75 million base pairs Identification method Larger faeces smaller faeces Life Span Avg. 2-3 Years Avg. 1.5-2.5 Years Tail A rat is bigger and has a thicker tail. A mouse is small and has a skinny tail.