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Rat's age in months Rat's age in years Rat's age in human years 5 D2 ]9 ~8 n# x2 d" w1.5 months (puberty) 0.125 years 12.5 years (puberty) 3 o B$ C- B" y1 N/ w) J2 ~ ?- h3 R. V6 months (social maturity) 0.5 years 18 years (social maturity) i0 V4 h1 M( }12 months 1 year 30 years 7 i& g* H3 N8 j
18 months 1.5 years 45 years Z. O7 m) p/ P) P) e) H& x24 months 2 years 60 years j% S( u% _ R3 \
30 months 2.5 years 75 years " y# u; ~; N* j H( S36 months 3 years 90 years . B# A! }# a" W) G; n1 J5 k