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2G4X8CE Female runner running with dogs in canicross style on hill

Does having four legs aid dogs with climbing? Part 2

One reader shares her own experience walking with two tall poles for balance, while another says it is dogs鈥� strong, flexible backs that make the difference here

F6YK0A Weltzeituhr on Alexanderplatz in Berlin

This week鈥檚 new questions

Fox with fresh fish standing on a stone in a lake. Amazing capture of this predator. Nature and wildlife is so rewarding and people still have a lot to learn from all of this.; Shutterstock ID 1041384616; purchase_order: -; job: -; client: -; other: -

Why don鈥檛 animals other than humans get sick from uncooked food?

Reindeers migrate for a best grazing in the tundra nearby of polar circle in a cold winter day.; Shutterstock ID 605430995; purchase_order: -; job: -; client: -; other: -

Has Earth鈥檚 shifting north magnetic pole affected migrating animals?

2G8TR2M Young woman sitting and holding a blue mug of tea outdoor

This week鈥檚 new questions

2HMRRGF Madrid, Spain - March 6th, 2021: Isidore of Seville statue at National Library of Spain, Madrid. Medieval Spanish scholar

Once life is established, is the evolution of intelligence inevitable?

Golden lion tamarin; Shutterstock ID 121264012; purchase_order: -; job: -; client: -; other: -

Why aren鈥檛 humans covered in hair like other primates are? Part 2

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Abstract city street light explosion effect; Shutterstock ID 592442246; purchase_order: -; job: -; client: -; other: -

Is there a maximum possible acceleration?

2G4X8CE Female runner running with dogs in canicross style on hill

Does having four legs aid dogs with climbing?

Our readers point to the work of John Maynard Smith, who said that vertical velocity should be inversely proportional to linear dimension - it鈥檚 not the number of legs that matters here

This week鈥檚 new questions

Why can a fly enter my home easily, but not escape as easily?

Why do humans like sparkly things?

This week鈥檚 new questions