  In recent years, the radio frequency (RF) energy harvesting technique is
considered as a favorable alternative to supply power for the next-generation
wireless sensor networks. Due to the features of energy self-sustainability and
long lifetime, the energy harvesting sensor network (RF-EHSN) becomes a
promising solution to provide smart healthcare services. Nowadays, many energy
harvesting based applications have been developed for monitoring the health
status of human beings; how to benefit animals, however, has not yet drawn
people's attention. This article explores the potential of applying RF-EHSNs to
monitoring the health level of animals. The unique challenges and potential
solutions at different layers of an RF-EHSN for animals' healthcare service are
studied.
