One clip names both of them

469,715 views between them.

Dog outweighs Guinea pig 55× — 40 kg against 0.7 kg.

Tale of the tape

Body mass

40 kg

🐕 Dog · AnAge

0.73 kg

🐭 Guinea pig · AnAge

Maximum lifespan

27 yr

🐕 Dog · AnAge

12 yr

🐭 Guinea pig · AnAge

Bars are sized against the larger of the two figures.

Animals caught on camera

Real footage of the animals on this site — hunting, fighting, and getting on with it.

Shared ancestry

The closest group they share is Theria (subclass), home to 9,319 species.

They last shared an ancestor about 81 million years ago.

Estimates range from 74 to 89 million years; the figure above is the middle estimate.

About this estimate

Dates from Upham, Esselstyn & Jetz 2019, PLoS Biology 17:e3000494 (CC0).