Dogs are prone to complex emotions such asjealousy and pride, according to scientific research that sheds new light on their relationship with humans.
Leaving a beloved pet behind for a holiday, or even for a long day at work, can be heart-wrenching。主人外出度假或公司加班、不得不将心爱的宠物独自留在家中，这真是件让人揪心的事。
But now there is a device that lets owners video chat with their dog or cat from anywhere in the world and even reward them with a treat。但是现在出现了一种设备，无论主人身在何处，都可以和自家的汪星人或喵星人视频聊天，还可以给它们好吃的作为奖励。
PetChatz claims to be the first-ever videophone of its kind and comes with a colour camera so that pets and owners can see each other。宠物可视电话PetChatz的产品发言人称，这是世界上第一款宠物可视电话。它配备有彩色摄像头，宠物和主人通过这部电话可以看到对方。
Dogs feel intense jealously when they spot that they are unfairly treated.
The device, which is available to pre-order from the Minnesota-based firm, dispenses treats and discharges a soothing scent for animals that are home alone, while also recording the animal’s antics so that owners can share videos of their pet’s reactions。通过这款宠物可视电话，主人可以给看家的宠物喂食，还可以释放一种舒缓神经的香气，同时还可以将宠物的表情录制下来，主人可以将宠物的表情视频在网上分享。 PetChatz的制造商本部在美国明尼苏达州，现在人们就可以预定这种可视电话。
However, what PetChatz describes as ‘a joyful sensory experience’ comes at a price - $349 (£213) - and the device is expected to ship in early 2014 to customers only in the U.S. and Canada。然而，要得到这种PetChatz公司所谓的“愉悦的感觉体验”可不便宜——349美元(约2123元人民币)。而且要到2014年上旬才开始发货，目前仅供应美国和加拿大两个国家。
Canines do not like seeing their owners offering affection to other creatures, especially other dogs, and react negatively when their owners bring home new partners, the research found.
The company said: ‘[The pets] see you, hear you, and feel your love with the tasty treats and soothing scents you provide. Your day becomes a little easier; the time away feels a little shorter.’这家公司的发言人说，“你的宠物可以看到你的面容，听到你的声音，电话里投放的美食和散发的香味可以让它感受到你的爱意。你的一天工作变得轻松了，你和宠物分别的时间似乎被缩短了。”
The PetChatz unit is mounted on a wall at the pet's line of sight and claims to be safe for animals and ‘chew resistant’ so it cannot be easily damaged。这种可视电话应放置在宠物视线范围内的墙壁上。其材质是“耐咀嚼”材料、不易损坏、安全可靠。
Psychologists previously believed most animals lack the "sense of self" needed to experience so-called secondary emotions such as jealousy, embarrassment, empathy or guilt. These motions are more complex than feelings associated with instant reaction – such as anger, lust or joy.
The device is connected to a Wi-Fi network and owners log on to PetChatz.com on their computer or use a smartphone app to talk to their pet。这部可视电话可以接收家中的无线网络，外出的主人通过电脑或智能手机应用登录PetChatz.com网站，就可以和宠物聊天。
A special ringtone tells the pet when its owner is calling, at which point the screen is activated and the video conversation is possible - providing the pet runs to the phone。主人来电时，这部可视电话会发出特殊的铃声提醒宠物，同时电话上的显示器被激活，主人和宠物就可以对话了——如果宠物跑过来接电话的话。
Dr Friederike Range, of the University of Vienna's neurobiology department, has shown that dogs feel intense jealously when they spot that they are unfairly treated compared with other dogs."Dogs show a strong aversion to inequity," she said.