  The majority of the active galactic nuclei (AGN) detected at
very-high-energies above 100 GeV belong to the class of blazars with a small
angle between the jet-axis and the line-of-sight. Only about 10 percent of the
gamma-ray AGN are objects with a larger viewing angle resulting in a smaller
Doppler boosting of the emission. Originally, it was believed that gamma-ray
emission can only be observed from blazars and those are variable in its
brightness. Instead, the last years have shown that non-blazar active galaxies
also show a fascinating variability behaviour which provide important new
insights into the physical processes responsible for the gamma-ray production
and especially for flaring events. Here, we report on the observation of
gamma-ray variability of the active galaxy PKS 0625-354 detected with the
H.E.S.S. telescopes in November 2018. The classification of PKS 0625-354 is a
still matter of debate. The H.E.S.S. measurements were performed as part of a
flux observing program and showed in the first night of the observation a
detection of the object with >5sigma. A denser observation campaign followed
for the next nine nights resulting in a decrease of the gamma-ray flux. Those
observations were accompanied with Swift in the X-ray and UV/optical band
allowing for the reconstruction of a multi-band broad-band spectral energy
distribution. We will discuss the implications of the gamma-ray variability of
the object.
