Living or extinct records whether a species still survives today. Wikipedia notes the wild giant panda population "had increased to 1,864 individuals" as of the most recent national survey, a species very much still alive even as it remains vulnerable. This dimension separates species a visitor could still see today from those known only from the fossil record.
Facts
Comparison
Reproductive ModeViviparous (Live-Bearing) 1 Living or Extinct
Sources
1. Wikipedia: Mammal
WikipediaMammal, lead sectionQuote, Mammal, lead section
All modern mammals give birth to live young, except the five species of monotremes, which lay eggs.
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