![You’veprobablyheardofworkingdogsthathelppoliceofficers,...]( "You’veprobablyheardofworkingdogsthathelppoliceofficers,...")
- 问题详情：You’veprobablyheardofworkingdogsthathelppoliceofficers,orhorsesthathelpfarmers.Didyouknowthatcarrierpigeons(信鸽)canbetrainedtohelppeopletoo?Herearesomeexamples.MailmanCarrierpigeonscanbetrainedtocarrymessagestopeople.Thenoteisplacedintoasma...
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