A very fat rat, cornered, speech balloon saying "there's a fatter rat over there

a very fat rat, cornered, speech balloon saying "there's a fatter rat over there", cat smiling, speech balloon saying "you're the fattest", photorealistic, highly detailed, cinematic lighting, vibrant colors, dynamic composition, whimsical, humorous, (best quality,4k,8k,highres,masterpiece:1.2),ultra-detailed,(realistic,photorealistic,photo-realistic:1.37)