Add spaces: Itwasenormous:length:730feet,wide:220feet,height:130feet.

Answer: It was enormous: length : 730 feet, wide : 220 feet, height : 130 feet.

Add spaces: Continueintheroundwith1tr-groupineachch-loopand2chbetweeneachtr-groupuntilpiecemeasures16-18cmfromthemiddleanddown.

Answer: Continue in the round with 1 tr-group in each ch-loop and 2 ch between each tr-group until piece measures 16-18cm from the middle and down.

Add spaces: Yourdogwillneedtobehospitalizedforsupportivecareifitisseverelyaffectedbythecondition.

Answer:
Your dog will need to be hospitalized for supportive care if it is severely affected by the condition.