answer. here's abc's david wright. >> reporter: at the end of her work day, morgan hates to keep her partner waiting. >> racing out the door, running to get the subway. >> reporter: it's not so much that he's legal just, he just misses her more than he should. >> there is a part of me that feels guilty just because i know that when he gets stressed, he is very distraught. and it's hard to watch. >> reporter: unconditional love isn't always healthy. >> hi! oh! i know, i know. i know, it's okay. >> reporter: morgan accepts that about hachi, a puppy who suffers from a very real, very human disorder. separation anxiety. >> hachi digs at the floor. and he digs at the door. he bites the molding. this is reallial in an effort to get out of the apartment. human, there's powerful medicine that can help. that's right. this melancholy mutt is on doggy anti-depress ants, a sort of prozac for puppies. hachi isn't alone. nearly 3 million dogs in the u.s. are on anti-anxiety meds right now. let's not even get into cats. >> the problem is that just like with us, we often turn to the drugs as the fir

abc's david wright. >> reporter: on the campaign trail this week, a blast from the past. >> thank you so much, oklahoma! it's so great to be in iowa! we're here thawing out! >> reporter: like a champion musher from the iditarod in ready to drive her team over the finish line. >> the next president of our great united states of america, donald j. trump! >> reporter: along with that black led are jacket also reprising some of her winningest lines from her run with john mccain. >> drill, baby, drill. >> it's time to drill, baby, drill. >> reporter: the only maverick out there who can match her when it comes to going rogue. >> going rogue left and right, that's why he's doing so well. >> reporter: the reality show star -- >> you're fired. >> reporter: turned politician -- >> we're going to make america great again. >> reporter: turning to the politician who became a reality star. >> this is really the first time in this campaign that we're seeing donald trump kind of take a back seat to someone else. see really stole the spotlight and the headlines. we saw it in that body language. he stood

the republican party. who scored big? here's abc's david wright. >> reporter: tonight donald trump was center stage in every way. accusing his nearest rival ted cruz of being too canadian. >> there's a big question mark on your head. party. you really can't. >> reporter: cruz hit back hard. >> the constitution hasn't changed. but the poll numbers have. and i recognize -- i recognize that donald is displayed that his poll numbers are falling in iowa. >> reporter: now that iowa is less than three weeks away, the gop debate no longer seemed just politely contentious. >> i have a feeling -- >> reporter: like the lead-up to a rose ceremony on "the bachelor." >> i'm probably going home. >> reporter: now it's more like "the hunger games." kill or be killed. it wouldn't come to this. >> a lot of folk in the media would love to see donald and me get in a giant food fight. i'm not going to engage in that, i hope donald won't either. >> reporter: but there he was accusing trump of having new york values. >> everyone understands that the values in new york city are socially liberal, pro-aborti

with fox news. so who stole the show david wright. >> before we get to the issues, let's address the elephant not in the room tonight. >> reporter: tonight ata debate -- >> it's not about donald trump. >> reporter: donald trump, for once, was not center stage. >> i kind of miss donald trump. he was a little teddy bear to ays had such a loving relationship. >> reporter: but he was still very much the center of attention. >> let me say i'm a maniac. and everyone is stupid, fat, and ugly. and ben, you're a terrible surgeon. now that we've gotten the donald rogue, holding his own event for veterans ten minutes away in desll the cameras like the academy awards. this is like the academy awards! >> reporter: he also raised $6 million for vet.s night and this bizarre split-screen moment. >> i didn't want to be here, i have to be honest. i wanted to be about five minutes away. >> reporter: cnn andd trump's rally. >> fox has been extremely nice and the last number of hours, actually -- and they've there and they said, how about now? they called a few minutes ago. how about now? i said, hasn't

winning ticket was sold. abc's david wright has the latest tonight plu fascinating advice from past winners. >> tonight's jackpot is approaching $1.6 billion -- >> reporter: tonight millionsf americans t inun to see the powerball drawin century. moments after tonight'sdrawing, california lotto officials tweeted, we have a winner in california. a t-winning ticket was sold in chino hills. we're still awaiting results from other states. the winning ticket apparently sold at this 7-eleven store. meaning someone will be claiming, org, that jaw-dropping $1.5 billion ckpot. seen. making this a $2 ticket to the 1% club. in theory, at least. >> c ine ere?th >> sure, you can. you can have an umbrella in case. >> reporter: we indulged our inner billionaires, shopping for cars -- >> i could get used to this. >> reporter: and condos. >> this is what you need. >> reporter: plenty of other dreaming too. all aoss america. >> il100% confident. pandemonium. >> it's been insane. >> reporter: inspiring billionaires lining up wealth. >> the winner! >> that can't be the winner, we're getting the winner.

. but this fiercely forward-thinking artist left a fans. here's abc's david wright. >> reporter: david bowie didn't turn his battle with cancer into a tabloid story, didn't even tell his fans he was sick. instead, from his deathbed, he turned it into art. look up here i'm in heaven >> reporter: this song "lazarus" released four days ago. i've got scars that can't be seen >> reporter: those buttons a reminder of death. everybody knows me now >> reporter: for a man about to die, this is a mastery of mortality. the deathbed as a piece of performance art. the whole thing very bowie. this is why people loved him. >> he knew the end was coming. and it was sort of like a parting gift to fans and a way of saying, it's okay. i'm making art out of my death. >> reporter: today in l.a., new york, london, and berlin, bowie fans were in shock. paying tribute and grieving. the pop star from another planet has gone back to the mothership. he was born david jones and took the stage name bowie because davey jones of the monkees got there first. a rebel long before he was famous. here he is age 17

, against all odds, they seem to have the momentum. i'm david wright for "nightline" in new york. >>> up next, the "trainwreck" star caught in a comedy scandal. the comedian now firing back at joke-stealing claims. mic checka by das efx by design. that feeling recaptured. by design. if you have moderate to severe rheumatoid arthritis like me... and you're talking to a rheumatologist about a biologic, this is humira. this is humira helping to relieve my pain and protect my joints from further damage. this is humira helping me reach for more. doctors have been prescribing humira for more than 10 years. humira works for many adults. it targets and helps to block a specific source of inflammation that contrubutes to ra symptoms. humira can lower your ability to fight infections, including tuberculosis. serious, sometimes fatal infections and cancers, including lymphoma, have happened, as have blood, liver and nervous system problems, serious allergic reactions, before treatment, get tested for tb. tell your doctor if you've been to areas where certain fungal infections are common, an

country and the future of the white house, here's abc's david wright. >> the president of the united states. >> reporter: the next time we hear the sergeant in arms make that familiar announcement, a different president will be walking into the chamber and glad handing his way down the aisle. the night was barack obama's last state of the union, his parting shot, at this point he's >> we live in a time of extraordinary change, change that's reshaping the way we live, the way we work, our planet, our place in the world. >> reporter: that word "change" which served as mantra for candidate barack obama's election all those years ago, tonight took on a different meaning. shaded by. seven years of compromises, disappointments, and unintended consequences. the office and its responsibilities have changed demand, visibly as it always does. tonight as president barack obama framed it, change can be good or bad. >> it's change that can broaden opportunity or widen inequality. >> reporter: the white house billed this speech as different sort of state of the union, not so much a laundry list of

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