Gee ! the weight alone would drag a deer down ....and the blood loss would be huge ....no wonder they raid gardens , they must be looking for high iron and protein foods .
No, not all at once, and talking about there life time
A single female tick lays thousands of eggs
The eggs hatch into 6 leg larva
Larva finds birds or mice
Larva sheds skin and becomes Nymph
Nymph molts into adult and this is when they want a deer, dog, human
And the cycle repeats
We find ticks on deer that have been killed, but how many dropped off after getting all they need and lay more eggs