They are notoriously shy around humans, beating their tails and chattering their teeth to try to warn us off before emitting loud whistles to tell other members of their colony to flee.
But when these alpine marmots see Matteo Walch, they scuttle to his side and show him nothing but affection.
The eight-year-old built up a remarkable relationship with the creatures since first being taken to see them by his nature-loving family four years ago.
1. The family return to visit the colony in Groslocker in the Austrian Alps for two weeks like every year.
Bizzarrely, the animals are heavier in the autumn, when they can weigh up to 8kg, in comparison to 3kg in the spring months.
He said: ‘I could spend hours watching animals – it gives me a connection with nature and its life forms.
‘It’s great that I have been able to document the marmot’s natural behaviour around Matteo without making them afraid of me and my equipment.
‘I wanted to capture the animals exactly the way I see them – the way they behave among each other, in harmony with their surroundings.’