The cream-and-gold dragon was suckling at her left breast, the green-and-bronze at the right. Her arms cradled them close. The black-and-scarlet beast was draped across her shoulders, its long sinuous neck coiled under her chin. When it saw Jorah, it raised its head and looked at him with eyes as red as coals. 

...

As Daenerys Targaryen rose to her feet, her black hissed, pale smoke venting from its mouth and nostrils. The other two pulled away from her breasts and added their voices to the call, translucent wings unfolding and stirring the air, and for the first time in hundreds of years, the night came alive with the music of dragons. 

- Book 1: A Game of Thrones

The green one shall be Rhaegal, for my valiant brother who died on the green banks of the Trident. 

- Book 2: A Clash of Kings

Across the tent, Rhaegal unfolded green wings to flap and flutter a half-foot before thumping to the carpet. When he landed, his tail lashed back and forth in fury, and he raised his head and screamed. If I had wings, I would want to fly too, Dany thought. 

- Book 2: A Clash of Kings

Beneath Dany’s gentle fingers, green Rhaegal stared at the stranger with eyes of molten gold. When his mouth opened, his teeth gleamed like black needles. 

- Book 2: A Clash of Kings

Rhaegal hissed and dug sharp black claws into her bare shoulder as Dany stretched out a hand for the wine. Wincing, she shifted him to her other shoulder, where he could claw her gown instead of her skin. 

- Book 2: A Clash of Kings

She stroked Rhaegal. The green dragon closed his teeth around the meat of her hand and nipped hard.

- Book 2: A Clash of Kings

 As Dany lifted her goblet to drink, Rhaegal sniffed at the wine and drew his head back, hissing. “Your dragon has a good nose.” Xaro wiped his lips. “The wine is ordinary. It is said that across the Jade Sea they make a golden vintage so fine that one sip makes all other wines taste like vinegar. Let us take my pleasure barge and go in search of it, you and I.” 

- Book 2: A Clash of Kings

She scratched Rhaegal under one eye, and his jade-green wings unfolded for a moment, stirring the still air in the palanquin. 

- Book 2: A Clash of Kings

Drogon was curled up beneath her arm, as hot as a stone that has soaked all day in the blazing sun. Rhaegal and Viserion were fighting over a scrap of meat, buffeting each other with their wings as smoke hissed from their nostrils. My furious children, she thought. They must not come to harm. “The comet led me to Qarth for a reason. I had hoped to find my army here, but it seems that will not be. What else remains, I ask myself?” I am afraid, she realized, but I must be brave. “Come the morrow, you must go to Pyat Pree.” 

- Book 2: A Clash of Kings

Viserion’s scales were the color of fresh cream, his horns, wing bones, and spinal crest a dark gold that flashed bright as metal in the sun. Rhaegal was made of the green of summer and the bronze of fall. They soared above the ships in wide circles, higher and higher, each trying to climb above the other. 

- Book 3:  Storm of Swords

But that time was not yet come. Rhaegal and Viserion were the size of small dogs, Drogon only a little larger, and any dog would have out-weighed them; they were all wings and neck and tail, lighter than they looked. 

- Book 3:  Storm of Swords

Rhaegal spread green wings and stirred the air, and Viserion’s neck swayed back and forth like a long pale snake’s as he followed the movement of her hand. 

- Book 3: A Storm of Swords

 As his sharp black teeth snapped shut around it, Rhaegal’s head darted close, as if to steal the prize from his brother’s jaws, but Drogon swallowed and screamed, and the smaller green dragon could only hiss in frustration. 

“Stop that, Rhaegal,” Dany said in annoyance, giving his head a swat. “You had the last one. I’ll have no greedy dragons. 

- Book 3: A Storm of Swords

“The warlocks in Qarth told you that you would be betrayed three times,” the exile knight reminded her, as Viserion and Rhaegal began to snap and claw at each other. 

...

Dany leaned forward and yanked Viserion’s tail, to pull him off his green brother. 

- Book 3: A Storm of Swords

Rhaegal could sense something wrong as well. Thrice he tried to take wing, only to be pulled down by the heavy chain in Jhiqui’s hand. 

- Book 3: A Storm of Swords

Drogon and Rhaegal were asleep atop some cushions, curled about each other, but Viserion perched on the edge of her empty bath. 

- Book 3: A Storm of Swords

The dragons answered. Rhaegal hissed and smoked, Viserion snapped, and Drogon spat swirling red-black flame. 

- Book 3: A Storm of Swords

Drogon and Rhaegal stirred at the smell of roasted meat. 

- Book 3: A Storm of Swords

Drogon beat the air with black wings, and Rhaegal twisted his head back and belched flame. 

- Book 3: A Storm of Swords

Screenshot Timeline of Rhaegal in Game of Thrones Season 8 (Pt. 2)

Screenshot Timeline of Rhaegal in Game of Thrones Season 8 (Pt. 3)