SYDNEY (AFP) ― Australian spiders may live happily in the bush, but a new study has found that at least one species also thrives on city life and grows bigger in urban areas.

The University of Sydney’s Elizabeth Lowe said while research showed invertebrates were sensitive to urbanization, not all species were negatively affected by living in cities.

In fact, golden orb-weaving spiders, which are common in both urban and natural environments in Sydney and its surrounds, were getting fattest in those built-up areas with the most concrete, roads and buildings. “We found that they were bigger in the city and particularly in areas with lots of hard surfaces and less vegetation,” Lowe told AFP on Saturday.

Lowe, a Ph.D. candidate in the university’s school of biological sciences, puts the finding down to the idea that concrete holds heat, meaning city spiders’ days and nights were warmer than those of their bush cousins.

Meanwhile urban parks were a good source of food for spiders because lighting in these areas attracted insect prey.