Cover - shares	6 Months Ended
	Jun. 30, 2022	Jul. 29, 2022
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Transition Report	false
Document Period End Date	Jun. 30, 2022
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2022
Current Fiscal Year End Date	--12-31
Document Quarterly Report	true
Entity File Number	001-39871
Entity Registrant Name	SAB BIOTHERAPEUTICS, INC.
Entity Central Index Key	0001833214
Entity Tax Identification Number	85-3899721
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	2100 East 54th Street North
Entity Address, City or Town	Sioux Falls
Entity Address, State or Province	SD
Entity Address, Postal Zip Code	57104
City Area Code	605
Local Phone Number	679-6980
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Elected Not To Use the Extended Transition Period	false
Entity Shell Company	false
Entity Bankruptcy Proceedings, Reporting Current	true
Entity Common Stock, Shares Outstanding		43,030,885
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common stock, 0.0001 par value per share
Trading Symbol	SABS
Security Exchange Name	NASDAQ
Warrants Each Exercisable for Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Warrants, each exercisable for one share of Common Stock at an exercise price of $11.50 per share
Trading Symbol	SABSW
Security Exchange Name	NASDAQ