which detail from the text best supports the infrence that docter dolittle's kind nature is the reason he has so many pets

after animals get better, many of them do not want to go away

Explanation:

this answer gives a reason as to why the animals choose to stay even after getting better

b. the 200th birthday of the united states

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.