  Hot dust-obscured galaxies (Hot DOGs) are a new population recently
discovered in the \wise All-Sky survey. Multiwavelength follow-up observations
suggest that they are luminous, dust-obscured quasars at high redshift. Here we
present the JCMT SCUBA-2 850 $\mu m$ follow-up observations of 10 Hot DOGs.
Four out of ten Hot DOGs have been detected at $>3\sigma$ level. Based on the
IR SED decomposition approach, we derive the IR luminosities of AGN torus and
cold dust components. Hot DOGs in our sample are extremely luminous with most
of them having $L_{\rm IR}^{\rm tot}>10^{14} L_\odot$. The torus emissions
dominate the total IR energy output. However, the cold dust contribution is
still non-negligible, with the fraction of the cold dust contribution to the
total IR luminosity $(\sim 8-24\%)$ being dependent on the choice of torus
model. The derived cold dust temperatures in Hot DOGs are comparable to those
in UV bright quasars with similar IR luminosity, but much higher than those in
SMGs. Higher dust temperatures in Hot DOGs may be due to the more intense
radiation field caused by intense starburst and obscured AGN activities.
Fourteen and five submillimeter serendipitous sources in the 10 SCUBA-2 fields
around Hot DOGs have been detected at $>3\sigma$ and $>3.5\sigma$ levels,
respectively. By estimating their cumulative number counts, we confirm the
previous argument that Hot DOGs lie in dense environments. Our results support
the scenario in which Hot DOGs are luminous, dust-obscured quasars lying in
dense environments, and being in the transition phase between extreme starburst
and UV-bright quasars.
